You are the man!! Wanted you to know I followed your instructions step by step and my sons quad fired up first shot and idled like new!! You saved his weekend up north and made me look like a hero to my 11 year old boy...a debt sir I can never repay thank you so much for your video and knowledge!! from a thankful dad and happy young man!!
Hey 65 ford, first off, I'd like to say I'm not what one would call a mechanic, but thanks to your easy to follow step bye step instructions, on cleaning my carb, my 2000 polaris 250 is now running, and i still can't believe i fixed it, thank you so much 65 ford, you saved my a lot of cash, in return i subscribed to your channel...
thank you so much for these videos, bought a couple 250s with no knowledge on how to fix them kept bogging down an dying on me, after cleaning carb following your videos they run top notch, feel brand new, cant thank you enough
Ok I got a new plug and tried it but still nothing. Then I added the oil and tried it still with the same result. I'm not a mechanic but I can normally get one started at least for a second. I don't have a compression gage but just putting my thumb over the plug hole it feels strong. There's also good pressure coming out of the exhaust and the pull rope has good tension if that matters. Thank you for your time I really appreciate it.
Thanks! Just ripped into my carb. Had dead spot from 0 - 1/4 throttle. Cleaned everything as shown and bam! Works like it should. I just bought this Polaris and it had sat for a few years. Lots of white flake stuff inside. Thanks for the video.
Nice clean up :-) The emulsion tube does come out, the pin is a locator for the slot down the side of the emulsion tube, also the main jet+washer tightens onto it to stop the tube from escaping upwards. Allways enjoy your videos mate :-)
Yep, you have a Mikuni. MIC is the abbreviation for Mikuni. An ebay one will work just fine. You should be able to get an entire kit with needle, seat, jets, gaskets etc for $20 on Ebay. Search by " carb rebuild polaris and you model name" it will pull up a few. Match up the year and go from there.
That sounds right. There are several grooves for the c clip to go into. If you removed the c clip then you should start with it in the middle slot. If you didn't remove it don't move it.
It only takes a tiny amount of gas to make it fire (2-3 drops). More than this and it will flood and it wont fire. Second I would try it with a different spark plug to eliminate that the plug is shorted. If neither of these work then the compression could be to low. To test this pour a tablespoon of motor oil down the plug hole and pull over the engine a few times without the plug. Then put a few drop of gas in and reinstall the plug. With the choke OFF try to see if she starts.
An engine will feel like it has compression even if it is to low. There is a point at which the engine just won't fire because of too low of compression. Most auto parts stores will rent you a compression gauge for free(Autozone, Oreillys, etc). What year is your machine?
That's kind of what I was thinking as most come out. I gave it several decent whacks but it didn't budge so instead of damaging it I figured it was pressed in.
I owned a shop and was the only certified Polaris mechanic in a 200 mile radius. They had real issues with these carbs because of the vibration of the 2 stroke engines. If you check carefully, almost all of these will need the needle and seat replaced. The vibration causes grooves to form inside the seat and the needle hangs up in them. Around 2005 Polaris came out with a bracket that supported these carbs better and stopped a lot of this problem. Just a heads up.
Yeah, owning a shop in a small town will teach you a lot. Love the vids. If I could have found some help with your knowledge, I might have kept it going. It is just hard doing everything yourself, especially after a few years when you are well established.
There is a vacuum line between the carb and what looks like the oil injector. Should this be completely sealed and have a tight connection between hose and carb? If air is getting in could this cause issue at full throttle when engine is very hot
Well the carb works smashing so it dont matter :-) When pushed from the main jet side they pop up into the throttle slide area, but that one sounds like a pig. Wise of you to do the right thing by not forcing it, ive snapped a few things in my time and ive allways wished i had never started. The sinking heart feeling, "Dam ive screwed it" lol.
Okay thanks, I also have a 300 polaris that I have the carb apart on, it was leaking gas from the overflows. So we determined it needs a new seat and needle, does that sound right? How'd you get your 250 to sound like a dirtbike? My 2 stroke quads sound waaay tamer than that
hello just subscribed. i have a question for you. on the main jet you said you cant get the tube out because its held by a pin? mine is loose and falls right out causing my trail boss not to run right. is this something that can be fixed and if so how? it seems like it should be pressed in right? any help is appreciated thanks
ok so i cleaned my 400s carb today, only issue when i was putting it back in was the spring and throttle cable popped out the barrel looking thing. So i got it back all together but im not sure if its right or not. I have the "c clip' of the needle on top of the brass circle thing. Does that make sense to you?
Hey man I just found your video. I have an issue with my carb. Its saturating with fuel I can't seen to find the problem. Your very knowledgeable I followed your video step by step but still have the Same problem.
I know im commenting really late but im trying to find the exact carb that is in a 2005 trailblazer the exact one shown in this video, i looked up the Mikuni Carburetor from the description but I am having a hard time finding the exact one.
My polaris 400 2 stroke quad bogs down from an idle and doesn't like to move, would cleaning the carb like you did fix this issue? Also the throttle sticks
hey i had the same exact problem my trail boss 330 it sat for 2 years and wouldn't start. I took all the gas out of the tank, rinsed it with new gas, took the fuel pump apart and rinsed it, poured new gas through the lines to rinse them. took the top of the carb off and sprayed cleaner inside and now it starts like its new. But I cant give it any gas because it will choke it up so I came here to figure out how to clean the jet
ok thanks sixtyfiveford, i learned how to clean the carb because of you much thanks!! the carb coming from the front thru where the air filter is my fuel is coming out. so i tapped the carb a couple of times to move the float and it was ok for a bit. then i tried to start it again and started to leak again so i shut the fuel valve off.???
hey can you help me out? my Polaris trail boss 330 sat for 2 years and wouldn't start. I cleaned the gas tank, fuel lines, and fuel pump. took the cover off the carb and sprayed cleaner in, and now it starts up right away and idles fine. Only problem is if I give it the slightest bit of gas it will pop and stutter like it wants to shut off. Someone told me to clean the main jet do you think this is the problem?
Can you tell me how I should run all the overfill lines? They guy I bought it from has a complete mess in there when it comes to all the lines running off of it and I have no clue where they are all supposed to go. Also your video will be very helpful when I go to rebuild my carb this weekend. Just not sure how to hook everything back to the machine. Thanks for your help!
Ben Champoux I can't really remember off the top of my head. Besides the oil injection line the others just hook up and vent below the motor. They aren't critical.
Do you know if its a mikuni carb I have? It just says 'mic' on it and made in japan Theres carb rebuild kits on ebay for about 20$ do you think one of those would work good? The stealership wants $76 just for the needle and seat
I need help I got a 330 trailboss and I can't figure out what's wrong. It's set for a year and it won't start. It's getting a spark and I have sprayed choke cleaner in the carb and put a little gas under the spark plug and it don't even try to start. It's got good compression but I can't figure out why the gas directly in the head won't start it for a second.
thanks 65 ford. carb dont leak anymore but now another problem it was what you said a hanging up float...however i cant get it started unless i use starter fluid ???? but when its on it idles up and down in small stages but stays on. i use the idle screw and it helps alittle. do you think i need to replace the carb? nothing looked warn and i took the whole carb apart and cleaned it as you did..?????
+John Tsarnas The compression on your engine is more than likely getting low. To make the choke system work, you can't give it any throttle. Once it fires you can give it gas. So start it without touching the thumb throttle and see if that makes a difference.
Hey man I highly doubt you still look at this. But I cleaned my carb and didn't think to pay attention to where the throttle was seated in the carb coming from the top and I'm having issues starting it now. I'm not sure if it's because of the throttle positioning being wrong or if I messed something else up.
The throttle slide has locating pins so it really only goes in 1 way. It shouldn't be excessively difficult to screw on the top cap. You should feel smooth movement of the throttle slide while operating the thumb throttle. I would pull the spark plug, open the thumb throttle all the way(choke off) and crank it over a few times. This will clear any excessive fuel. Clean/reinstall the spark plug and then give it a try to start.
Thank you allot man. I was having issues with the carburetor flooding and I finally figured out why I was having so many issues. My throttle cable wire was coming apart and getting caught up. Ordered me a new one. Should be in on Friday. I'll keep you updated! Thank you for the response and the video
Hey i was wondering if you could help me out, i have a trailblazer just like yours and i have tried cleaning my carb but it is still stopped up, anything you would suggest soaking it in to free it up?
Hello my name is mark I like your video I have a question for you I'm buying a atv to fix then sell the probleam is the carb needs rebuilt it runs on full choke and runs up to half throttle would it be the carb that need to be rebuilt get back with me thanks mark
Not sure if this will get response but the air vent hole leaked on top leaked gas I don’t think I screwed that screw down and backed of 1 1/2 turns I think I did three then saw this could that be the cause
If any of the air vents are leaking gas generally the float/needle isn't seating. This will cause the fuel level to rise too high or never stop flowing and gas to leak out.
hey 65 im the 1987 polaris 250 trailboss same guy you were talking to a couple of days ago.. i still cant start her up.. it has good compression but i noticed the spark plug is very wet?? i cleaned it up, sprayed soem starter fluid and tried to start again and still nothing? someone told me it could be the ignition key switch?? if so how do i find out if the ignition switch is shorted out?
+John Tsarnas Too much fuel so the engine is flooded and the addition of starter fluid will just make the flooding worse. You need to de-flood the engine by pulling the plug, and use a lighter to burn off the excess fuel out of the plug, then with the choke off and the throttle held wide open(still no plug in motor) spin the engine over a few times. Then replace the plug and she should start.
you probably wont see this but i have a 2001 polaris scrambler 400 2×4 and it idles to high and when i go full throttle it bogs out and only goes mid throttle. air filter clean. carb was recleaned a few months ago
Adjusting the idle speed is simple with the screw attached to the flexible extension on the side of the carb. If the engine bogs under load, it is generally either a fouled spark plug or worn piston rings. So put a new plug in or clean the old one(vid on my channel) and if this doesn't fix it, do a compression test.
Hey I have a 91 Trail Blazer 2 stroke and it appears to be the same carb but you have an additional connection just in front (toward the engine) from the fuel line. I'm not sure why my carb doesnt seem to have any air line connections. I have idle, fuel line, and throttle cable and of course air box and engine holes. I'm baffled as to where the oil line is supposed to hook up? I'm positive I have the right carb but the manual and schematics don't label tube connections....can you clarify where the oil pump line connects?
I do so many different models, I can't recall the exact location for the oil hook up. Some hook on the carb and some hook between the carb and engine in the intake boot/manifold.
hey while working on my car on my 1986 polaris 250 tail boss i was wondering can i flood it? i was having problems with my throttle cables and fixed. however now i cant get it started??
+W01191 ADM Yeah, they can get flooded pretty easily. Along with flooding you can foul a spark plug. To clear a flooded condition, pull the spark plug and crank the engine a few times(throttle open no choke) and then you can clean the fouled plug th-cam.com/video/dYwSObeCaUY/w-d-xo.html
+sixtyfiveford great video. Is this mikuni carb the same as what is used on the polaris 400 2 stroke engines.....it looks almost the same. I would suspect that only jet size and settings would be what the difference between the usage on one size engine and another.
+Chance Dayton Sorry, I can't recall off the top of my head as I work on so many different machines. Some connect to the back of the carb and others to the intake area of the engine.
One from the side next to the choke fitting and the one at the air breather end are supposed to connect together at a tee then has a 1 way flow fitting. The 3rd is under carb bowl and is just a overflow routed downward.
Sixtyfive. My trailblazer was in storage for a while, got it out, wouldn't start, I thought it was the carb so I clean it up (sure enough some passages were clot up), put it back together. Then I noticed my gas switch was on reserve but when turned from reserve(empty) to on ... gas started to leak from the "air vent line" located at the bottom... I pulled it apart again and even changed the "needle" (I thought perhaps is not closing well and flooding the bottom where the floaters are). Any help will be great! Thank you in advanced.
Reading below , looks like that "air vent line " is called: "overflow drain". You mentioned it is for extreme angles, however mine is on a flat area inside the garage. Why is it overflowing? what should I do?
Herly Sarmiento The needle isn't sealing. This can be from sticking floats or a needle that is sticking in the seat housing. It can also be from the miss adjusted needle lever or debris from the gas tank holding it open.
It screws out out of the carb with the bolt. Then there will be a spring and plunger that goes into the carb. That will just pull straight out after the bolt is unscrewed.
@@sixtyfiveford the spring and plunger isnt sliding out. I didn't know if there was something else that was needed to allow it to come free. Im lost at this point. Thanks.
Any 2 stoke or sometimes called 2 cycle oil. Don't use motor oil(like 5w30, 10w40 ect) Here's the good Polaris Synthetic stuff amzn.to/4bZK7Tm they call for. A gallon lasts for a long time. The 250 Polaris uses a ration of 40:1 or 3.2oz of oil to 1 gallon of gas and mixes it for you from this tank. Just add this to the front tank and go. If I recall you only have to fill the front tank after you've burned 4-5 gas tanks full.
hi buddy,i bought a 2001 polaris trailboss 325,in really good condition but i cant get it to start thate is no spark on the sparkplug,i need some help please i dont know what could be the problem.thanks
+sixtyfiveford hi,thanks for yiur reply,i noticed that when you turn on the ignition the dash light go off sometimes,i have to turn it with some force then they stay on,also where is the kill switch located?
+sixtyfiveford i removed the black wire "killswitch "and started right up" it stoped about a minute later and it was leaking a lot of gas on the clear hose nextto carburater i think its an overflow hose. what does it mean? cdi? new carb kit?
You have 2 kill switches: one on the handle bar and the key. Either will kill the motor. If you're leaking gas your float/needle seat are leaking and you need to clean the carb.
I cleaned the carb and i javent seen any leaks so problem solved. But what remains is that when i put the wire back ont he cdi it doesnt even start. But it does when i unplug it,but dies after a lil while i have a new coil on the way but i dont know what else to order. What could it be. It only starts when i pull the cord not with the electric. I cant pin point the problem. By the way thanks again for helping me before with my polaris 250trailblazer you i did everything in your video on cleaning carb and replaced the gas hoses and new filter and haven't had a problem since.
am ready to drive this Polaris off a cliff. man nothing but problems! I purchased a 2001 trailblazer and have replaced almost every part but the seat and plastics. are all Polaris trailblazer like this? if it gets no spark then its the carb, I even rebuilt the trans on it. this Polaris is been nothing but a pain in the a$$. Just wondering because all my Yamahas don't give me this much grief!!!!
sixtyfiveford Yeah man I did a compression test this morning, and its at 90 again. I just rebuilt the top end under a year ago. This bike is going to ATV heaven
I generally slowly work it in with gravity. So fill the reservoir and loosen a bleed screw by the wheel. Let it sit and occasionally slowly squeeze the back lever and slowly release. This should allow the fluid to start flowing. You can also loosen the brake like at the reservoir to help the fluid flow faster into the master cylinder.
Hey guys i have a 2001 250 trailblazer , cleaned the carbs twice i sprayed cleaner and applied compress air everything seemed clean but it won't idle. The idle screw doesn't have any effect. O it does turn on and run but it is at a high idle. Only with the choke on will it idle properly … Please please help !!!
sixtyfiveford Also I have a different question I bought this bike from a friend and he had it park for about 6-7 years without running. Reverse doesn't work at all is that a major issue ? The shifter when in the back position the bike bogs down a little but doesn't move at all. Thanks for your time !
It takes a little bit of time to remove the gearbox but it is very basic once you open it up. I just sounds like something simple is binding. It is probably something very inexpensive it just takes hours to get to it.
+sixtyfiveford hey buddy its me again. i installed the new CDI and new coil on my 2001 polaris trailboss 325 2x4 and still no fire i disconected the black wire from the new cdi and started but died few seconds later. im going crazy there are no poched wires anywhere the atv is in very good condition. also i cant find anything on the web to show me where the gas lines to the carburetor are supposed to go. i just want to make sure yhey are all connected well.sounds like a gas issue to me.canyou please show me how the carb gas lines are installed.thank you very much for all of your help.
It seams you have at least 2 issues. The first is your kill switch is killing the spark. But you're removing the black wire will bypass that. So you're left with fuel delivery or compression issues. If you can't get it to restart with a "LITTLE" starting fluid after it dies you need to check the compression. A cold engine will have higher compression than a motor that is even slightly warmed up so sometimes they will start but not continue to run.
+sixtyfiveford on the carburetor,on the side where the idle screw is,there are two pivots where you connect the gas hose, they are close almost on top of each other, i have the hose conected to the top.is that the right place? ?
hi, i have a 2000 polaris trailblazer 250 and it runs for about 15 minutes the it dies i wait about minutes and starts fine but then dies again after 10 minutes.please help me i dont know whats wrong with it. i also noticed theres lil gas coming out of vent lines. please any input would help.thanks
+1982pantro You're fuel filter is more than likely clogged. It sounds like it's limiting the fuel flow, so though fuel can flow into the carb it can't keep up with the demand of the engine.
thank you very very much buddy,i just bought it for 400 dlars and i was afraid i was going to spend more on the top end,ive been reading alot of blogs and some people said they were having the same problem and had to do a new top end,the local shop here in az is very expensive because they are the only ones around where i live,and thanks to your carburetor cleaning vid i was able to do mine. i just placed my order on ebay for a new filter,the one on the quad looks old and dried,i didnt know such a small thing can stop the machine from running. one more thing if it came down to having my top end done what do you thing ill be looking at price wise? thank you very much for taking the time.
thank you,illwait a couple of days until filter arrives,I'll plug it in and see hoe it goes. you have a new loyal subscriber. I'll keep you updated man,thanks.
ok. I must be mentally challenged. The choke cable? I unscrewed the 1/2" brass fitting on the end of the cable but the actual inner cable is still attached. help please!
+Randy Osborn OK. Never mind. Mine was so massively stuck that I had to pull on it to the point I thought I was going to break it. (No wonder my bike didn't run right) Now, on to the cleaning...
+sixtyfiveford Thanks man! Great vid. Took me about 2 hrs. She started 3rd pull. Running great. Wont let gas set in it next winter. Ha! Next project gonna replace or rebuild the rear (foot) brake master cylinder. I own 3 popos and none of the foot brakes work?
Yes. But it injects the oil separately through a tank mounted on the front vs mixing the gas oil yourself. However if you don't trust the oil injection system you can mix it yourself and add gas/oil 2 stroke mix to the main fuel tank
It is an overflow drain. If the fuel level gets to high from the atv being at an extreme angle or something it drains excess fuel out this hose onto the ground. It's not really important. The other misc lines are vents for the carb bowl.
Hey I have a issues with with my polaris 250 traiblazer I did what said on the video but now I can't make to run. I been messing with the air screw but still it's. Hard. There's anyway u can hit me up or give me u number. So I can explain better tank you
Miguel Cervantes These are fixed jet and you really can't adjust them(only very fine virtually unnoticeable adjustments). First: These are notorious from foul running due to low engine compression and running poorly due to fouled spark plugs. If it ran great and you just let it sit for a long time then the carb could be the issue. If it slowly developed this issue then it is likely compression related. If it is hard to start, the air passages I show at the mouth of the carb are dirty and or the main jet. If it sputters and bogs as you try to accelerate the main jet is dirty. If it won't idle then the idle circuit/jet is dirty. There are a lot of tiny passages that even I miss once in a while an have to take a carb back apart.
Already. Clean the carb 4 times. I been messing with the air screw I did turn on. But it turn off again it's hard to turn on again when it was on u hear a knocking sounds I took the cilinder offf and on the piston has little play I don't know if that's the way it's suppose to be like dat I haven't check the compression yet don't know how to do dat this is my number call me plz 7135303920 so I can explain u better
If you've cleaned it 4 times it should be clean. Diagnosing over the phone/internet is hard and virtually impossible. Knocking is not good nor is piston play. It is more than likely piston slap and worn rings. I show basic piston ring replacing here: th-cam.com/video/cjKruxKR4QE/w-d-xo.html
I got a polaris 250 trail boss It was running fine then we run out of gas after filling the thank did not want to start. do you think something/trash went in to the carb, do you think I need to do what you did in this videos?
9 years later some one still needs this video thx man💥😎
These are fun machines. I hope you keep it going.
You are the man!! Wanted you to know I followed your instructions step by step and my sons quad fired up first shot and idled like new!! You saved his weekend up north and made me look like a hero to my 11 year old boy...a debt sir I can never repay thank you so much for your video and knowledge!! from a thankful dad and happy young man!!
Awesome.. Glad the video helped.
Oh it did just wrapped it up today! Thanks! !
Hey 65 ford, first off, I'd like to say I'm not what one would call a mechanic, but thanks to your easy to follow step bye step instructions, on cleaning my carb, my 2000 polaris 250 is now running, and i still can't believe i fixed it, thank you so much 65 ford, you saved my a lot of cash, in return i subscribed to your channel...
Awesome, I'm glad you attempted it.
thank you so much for these videos, bought a couple 250s with no knowledge on how to fix them kept bogging down an dying on me, after cleaning carb following your videos they run top notch, feel brand new, cant thank you enough
Thanks, I'm glad you liked it.
Ok I got a new plug and tried it but still nothing. Then I added the oil and tried it still with the same result. I'm not a mechanic but I can normally get one started at least for a second. I don't have a compression gage but just putting my thumb over the plug hole it feels strong. There's also good pressure coming out of the exhaust and the pull rope has good tension if that matters. Thank you for your time I really appreciate it.
Thanks! Just ripped into my carb. Had dead spot from 0 - 1/4 throttle. Cleaned everything as shown and bam! Works like it should. I just bought this Polaris and it had sat for a few years. Lots of white flake stuff inside. Thanks for the video.
Sixtyfiveford , Sir you are the man ! The Throttle cable was unscrewed all the way out at the adjustment end. Thank you again Sir
I like these carbs as they are very straight forward.
Thank you for this video. I have a 2004 sportsman 400 that needed a carb cleaning, and this showed me exactly how to do it. worked great.
Awesome. Glad you're back up and going.
Nice clean up :-)
The emulsion tube does come out, the pin is a locator for the slot down the side of the emulsion tube, also the main jet+washer tightens onto it to stop the tube from escaping upwards.
Allways enjoy your videos mate :-)
Yep, you have a Mikuni. MIC is the abbreviation for Mikuni. An ebay one will work just fine. You should be able to get an entire kit with needle, seat, jets, gaskets etc for $20 on Ebay. Search by " carb rebuild polaris and you model name" it will pull up a few. Match up the year and go from there.
That sounds right. There are several grooves for the c clip to go into. If you removed the c clip then you should start with it in the middle slot. If you didn't remove it don't move it.
It only takes a tiny amount of gas to make it fire (2-3 drops). More than this and it will flood and it wont fire. Second I would try it with a different spark plug to eliminate that the plug is shorted. If neither of these work then the compression could be to low. To test this pour a tablespoon of motor oil down the plug hole and pull over the engine a few times without the plug. Then put a few drop of gas in and reinstall the plug. With the choke OFF try to see if she starts.
An engine will feel like it has compression even if it is to low. There is a point at which the engine just won't fire because of too low of compression. Most auto parts stores will rent you a compression gauge for free(Autozone, Oreillys, etc). What year is your machine?
Yeah, sounds like a new needle and seat is needed as long as the floats are in good condition. This 250 has an aftermarket exhaust.
Most likely a carb issue but could also be as simple as a fouled spark plug. If the throttle is sticking I would definitely pull the carb apart.
Really good breakdown Bud , Iv`e done my friends so many times on his he has the same machine , I have his old carb in my shop .
That'll work. You just have to be carefull to not enlarge the hole as the brass jets are soft metal.
That's kind of what I was thinking as most come out. I gave it several decent whacks but it didn't budge so instead of damaging it I figured it was pressed in.
I owned a shop and was the only certified Polaris mechanic in a 200 mile radius. They had real issues with these carbs because of the vibration of the 2 stroke engines. If you check carefully, almost all of these will need the needle and seat replaced. The vibration causes grooves to form inside the seat and the needle hangs up in them. Around 2005 Polaris came out with a bracket that supported these carbs better and stopped a lot of this problem. Just a heads up.
Thanks for the heads up. Sounds like you've done your fair share.
Yeah, owning a shop in a small town will teach you a lot. Love the vids. If I could have found some help with your knowledge, I might have kept it going. It is just hard doing everything yourself, especially after a few years when you are well established.
Online you can find parts breakdowns with pictures for your quad. This will give you a good look at the internals and where it plugs into at.
Good video, how about using a short piece of high "E" string from a guitar to clean out the jets?
There is a vacuum line between the carb and what looks like the oil injector. Should this be completely sealed and have a tight connection between hose and carb? If air is getting in could this cause issue at full throttle when engine is very hot
Well the carb works smashing so it dont matter :-)
When pushed from the main jet side they pop up into the throttle slide area, but that one sounds like a pig.
Wise of you to do the right thing by not forcing it, ive snapped a few things in my time and ive allways wished i had never started.
The sinking heart feeling, "Dam ive screwed it" lol.
Okay thanks, I also have a 300 polaris that I have the carb apart on, it was leaking gas from the overflows. So we determined it needs a new seat and needle, does that sound right?
How'd you get your 250 to sound like a dirtbike? My 2 stroke quads sound waaay tamer than that
Awesome, Glad my video helped.
Hey I took it to a mechanic and he said it was water in the carb but good compression. Thanks alot
hello just subscribed. i have a question for you. on the main jet you said you cant get the tube out because its held by a pin? mine is loose and falls right out causing my trail boss not to run right. is this something that can be fixed and if so how? it seems like it should be pressed in right? any help is appreciated thanks
Mine keeps spitting fuel back out of the carb. Would that be the needle and seat?
ok so i cleaned my 400s carb today, only issue when i was putting it back in was the spring and throttle cable popped out the barrel looking thing. So i got it back all together but im not sure if its right or not. I have the "c clip' of the needle on top of the brass circle thing. Does that make sense to you?
Hey man I just found your video. I have an issue with my carb. Its saturating with fuel I can't seen to find the problem. Your very knowledgeable I followed your video step by step but still have the Same problem.
Float/Needle/seat not sealing.
I good carb clean will help. Also a new spark plug.
hello. where can I buy that carburetor?
thanks for the video
I know im commenting really late but im trying to find the exact carb that is in a 2005 trailblazer the exact one shown in this video, i looked up the Mikuni Carburetor from the description but I am having a hard time finding the exact one.
Fixing to tear one down on a 99 model, thanks for the refresher course
Yeah, hopefully it helps.
My polaris 400 2 stroke quad bogs down from an idle and doesn't like to move, would cleaning the carb like you did fix this issue? Also the throttle sticks
Hey man. Great video! Curious about what make and model the rear rack is. Any info would be appreciated. Thanks!
I believe that is the stock Polaris rack.
hey i had the same exact problem my trail boss 330 it sat for 2 years and wouldn't start. I took all the gas out of the tank, rinsed it with new gas, took the fuel pump apart and rinsed it, poured new gas through the lines to rinse them. took the top of the carb off and sprayed cleaner inside and now it starts like its new. But I cant give it any gas because it will choke it up so I came here to figure out how to clean the jet
ok thanks sixtyfiveford, i learned how to clean the carb because of you much thanks!! the carb coming from the front thru where the air filter is my fuel is coming out. so i tapped the carb a couple of times to move the float and it was ok for a bit. then i tried to start it again and started to leak again so i shut the fuel valve off.???
+W01191 ADM There is more than likely just some debris holding open the float needle.
hey can you help me out? my Polaris trail boss 330 sat for 2 years and wouldn't start. I cleaned the gas tank, fuel lines, and fuel pump. took the cover off the carb and sprayed cleaner in, and now it starts up right away and idles fine. Only problem is if I give it the slightest bit of gas it will pop and stutter like it wants to shut off. Someone told me to clean the main jet do you think this is the problem?
I'm gonna put a compression gage on it tommorow but if that comes back ok, where would u suggest from here? Again thanks alot.
Can you tell me how I should run all the overfill lines? They guy I bought it from has a complete mess in there when it comes to all the lines running off of it and I have no clue where they are all supposed to go. Also your video will be very helpful when I go to rebuild my carb this weekend. Just not sure how to hook everything back to the machine.
Thanks for your help!
Ben Champoux I can't really remember off the top of my head. Besides the oil injection line the others just hook up and vent below the motor. They aren't critical.
Do you know if its a mikuni carb I have? It just says 'mic' on it and made in japan
Theres carb rebuild kits on ebay for about 20$ do you think one of those would work good? The stealership wants $76 just for the needle and seat
Thanks, do you happen to know what gap the plug should be at....for the polaris 400 (i googled it and only found .028 is that correct?)
I need help I got a 330 trailboss and I can't figure out what's wrong. It's set for a year and it won't start. It's getting a spark and I have sprayed choke cleaner in the carb and put a little gas under the spark plug and it don't even try to start. It's got good compression but I can't figure out why the gas directly in the head won't start it for a second.
Thanks Zaipai.
Good presentation, young man.
Thanks, I'm glad you liked it.
Hi i need help with finding where the 2-cycle pump line plugs on the carb at i have a 98 300 express thanks.
thanks 65 ford. carb dont leak anymore but now another problem it was what you said a hanging up float...however i cant get it started unless i use starter fluid ???? but when its on it idles up and down in small stages but stays on. i use the idle screw and it helps alittle. do you think i need to replace the carb? nothing looked warn and i took the whole carb apart and cleaned it as you did..?????
+John Tsarnas The compression on your engine is more than likely getting low. To make the choke system work, you can't give it any throttle. Once it fires you can give it gas. So start it without touching the thumb throttle and see if that makes a difference.
Hey man I highly doubt you still look at this. But I cleaned my carb and didn't think to pay attention to where the throttle was seated in the carb coming from the top and I'm having issues starting it now. I'm not sure if it's because of the throttle positioning being wrong or if I messed something else up.
The throttle slide has locating pins so it really only goes in 1 way. It shouldn't be excessively difficult to screw on the top cap. You should feel smooth movement of the throttle slide while operating the thumb throttle.
I would pull the spark plug, open the thumb throttle all the way(choke off) and crank it over a few times. This will clear any excessive fuel. Clean/reinstall the spark plug and then give it a try to start.
Thank you allot man. I was having issues with the carburetor flooding and I finally figured out why I was having so many issues. My throttle cable wire was coming apart and getting caught up. Ordered me a new one. Should be in on Friday. I'll keep you updated! Thank you for the response and the video
thanks got it started but the scariest thing happened oil and gas is pissing out the muffler?????
+john tsarnas Severe overflooding causes this.
What else would u check if the compression checked good
I cleaned it up and it runs good now thanks
does anyone know a good website to get new plastics or used for a 2006 Polaris Trailblazer 250? Thank You
You covered that pretty well, thanks.
I have a trail blazer 250 2005. I dont know how to connect the vacuum line back on.
Hey i was wondering if you could help me out, i have a trailblazer just like yours and i have tried cleaning my carb but it is still stopped up, anything you would suggest soaking it in to free it up?
+Reverend_Toast Carb cleaner, which is just Acetone is the best and quickest thing to dissolve old gas.
i have a 250 trailblazer too i just bought it...do you know if there is any way to hook up a led light in the front???
Just wire it to the headlight wires.
Awesome, I'm glad to hear this. Now you just need to ride the hell out of it. :)
Hello my name is mark I like your video I have a question for you I'm buying a atv to fix then sell the probleam is the carb needs rebuilt it runs on full choke and runs up to half throttle would it be the carb that need to be rebuilt get back with me thanks mark
+Mark Paez Jr Yes, the carb needs cleaning.
Not sure if this will get response but the air vent hole leaked on top leaked gas I don’t think I screwed that screw down and backed of 1 1/2 turns I think I did three then saw this could that be the cause
If any of the air vents are leaking gas generally the float/needle isn't seating. This will cause the fuel level to rise too high or never stop flowing and gas to leak out.
hey 65 im the 1987 polaris 250 trailboss same guy you were talking to a couple of days ago.. i still cant start her up.. it has good compression but i noticed the spark plug is very wet?? i cleaned it up, sprayed soem starter fluid and tried to start again and still nothing? someone told me it could be the ignition key switch?? if so how do i find out if the ignition switch is shorted out?
+John Tsarnas Too much fuel so the engine is flooded and the addition of starter fluid will just make the flooding worse. You need to de-flood the engine by pulling the plug, and use a lighter to burn off the excess fuel out of the plug, then with the choke off and the throttle held wide open(still no plug in motor) spin the engine over a few times. Then replace the plug and she should start.
That sounds right.
you probably wont see this but i have a 2001 polaris scrambler 400 2×4 and it idles to high and when i go full throttle it bogs out and only goes mid throttle. air filter clean. carb was recleaned a few months ago
Adjusting the idle speed is simple with the screw attached to the flexible extension on the side of the carb. If the engine bogs under load, it is generally either a fouled spark plug or worn piston rings. So put a new plug in or clean the old one(vid on my channel) and if this doesn't fix it, do a compression test.
I adjusted the idle screw. But i havent gotten the rings yet. And the spark plug is brand new. And compression is fine
Hey I have a 91 Trail Blazer 2 stroke and it appears to be the same carb but you have an additional connection just in front (toward the engine) from the fuel line. I'm not sure why my carb doesnt seem to have any air line connections. I have idle, fuel line, and throttle cable and of course air box and engine holes. I'm baffled as to where the oil line is supposed to hook up? I'm positive I have the right carb but the manual and schematics don't label tube connections....can you clarify where the oil pump line connects?
I do so many different models, I can't recall the exact location for the oil hook up. Some hook on the carb and some hook between the carb and engine in the intake boot/manifold.
thanks it sounds like it doesn't matter a whole lot then as long as it's getting the oil pulled into the manifold
If you're ensure, you can always just premix the gas oil in the gas tank and pinch off the oil inject line.
can show us how to connect together the carburator
stuck choke? bad ignition switch? just reaching
hey while working on my car on my 1986 polaris 250 tail boss i was wondering can i flood it? i was having problems with my throttle cables and fixed. however now i cant get it started??
+W01191 ADM Yeah, they can get flooded pretty easily. Along with flooding you can foul a spark plug. To clear a flooded condition, pull the spark plug and crank the engine a few times(throttle open no choke) and then you can clean the fouled plug th-cam.com/video/dYwSObeCaUY/w-d-xo.html
+sixtyfiveford
great video. Is this mikuni carb the same as what is used on the polaris 400 2 stroke engines.....it looks almost the same. I would suspect that only jet size and settings would be what the difference between the usage on one size engine and another.
Hey my 1999 trailblazer for the oil intake I can't find the oil line that goes to it and I was wondering where it came off of to connect to the carb?
+Chance Dayton Sorry, I can't recall off the top of my head as I work on so many different machines. Some connect to the back of the carb and others to the intake area of the engine.
I bought a 2003 trailblazer the 3 small lines are missing on the carb 2 are vent lines but I'm not sure what way to route all 3
One from the side next to the choke fitting and the one at the air breather end are supposed to connect together at a tee then has a 1 way flow fitting. The 3rd is under carb bowl and is just a overflow routed downward.
Sixtyfive. My trailblazer was in storage for a while, got it out, wouldn't start, I thought it was the carb so I clean it up (sure enough some passages were clot up), put it back together. Then I noticed my gas switch was on reserve but when turned from reserve(empty) to on ... gas started to leak from the "air vent line" located at the bottom... I pulled it apart again and even changed the "needle" (I thought perhaps is not closing well and flooding the bottom where the floaters are). Any help will be great! Thank you in advanced.
Reading below , looks like that "air vent line " is called: "overflow drain". You mentioned it is for extreme angles, however mine is on a flat area inside the garage. Why is it overflowing? what should I do?
Herly Sarmiento The needle isn't sealing. This can be from sticking floats or a needle that is sticking in the seat housing. It can also be from the miss adjusted needle lever or debris from the gas tank holding it open.
HOW DO you get the choke cable out? i know its gotta be simple but i took it off and don't know what else to do to get the cable out of the carb?
It screws out out of the carb with the bolt. Then there will be a spring and plunger that goes into the carb. That will just pull straight out after the bolt is unscrewed.
@@sixtyfiveford the spring and plunger isnt sliding out. I didn't know if there was something else that was needed to allow it to come free. Im lost at this point. Thanks.
@@ericoliver6802 I assume you have the nut completely out and its dangling by the cable? Spray penetrating oil into the hole and wait.
What type of oil you put on the front tank that goes to the oil pump?🙏🏻
Any 2 stoke or sometimes called 2 cycle oil. Don't use motor oil(like 5w30, 10w40 ect) Here's the good Polaris Synthetic stuff amzn.to/4bZK7Tm they call for. A gallon lasts for a long time. The 250 Polaris uses a ration of 40:1 or 3.2oz of oil to 1 gallon of gas and mixes it for you from this tank. Just add this to the front tank and go. If I recall you only have to fill the front tank after you've burned 4-5 gas tanks full.
Thank You so much I appreciate you replay n help me 🙏🏻
Very detailed!
Thanks, I'm glad it was helpful.
Ola amigo.. onde fica a numeração no quadro desse quadriciclo?
hi buddy,i bought a 2001 polaris trailboss 325,in really good condition but i cant get it to start thate is no spark on the sparkplug,i need some help please i dont know what could be the problem.thanks
+1982pantro Play with the key switch and the kill switch as they could be killing spark.
+sixtyfiveford hi,thanks for yiur reply,i noticed that when you turn on the ignition the dash light go off sometimes,i have to turn it with some force then they stay on,also where is the kill switch located?
+sixtyfiveford i removed the black wire "killswitch "and started right up" it stoped about a minute later and it was leaking a lot of gas on the clear hose nextto carburater i think its an overflow hose. what does it mean? cdi? new carb kit?
You have 2 kill switches: one on the handle bar and the key. Either will kill the motor. If you're leaking gas your float/needle seat are leaking and you need to clean the carb.
I cleaned the carb and i javent seen any leaks so problem solved. But what remains is that when i put the wire back ont he cdi it doesnt even start. But it does when i unplug it,but dies after a lil while i have a new coil on the way but i dont know what else to order. What could it be. It only starts when i pull the cord not with the electric. I cant pin point the problem. By the way thanks again for helping me before with my polaris 250trailblazer you i did everything in your video on cleaning carb and replaced the gas hoses and new filter and haven't had a problem since.
Hey I clean my carburator n now my 1999 polaris scrambler 4x4 it won't start any suggestions
+zsamuco10 Test for spark.
am ready to drive this Polaris off a cliff. man nothing but problems! I purchased a 2001 trailblazer and have replaced almost every part but the seat and plastics. are all Polaris trailblazer like this? if it gets no spark then its the carb, I even rebuilt the trans on it. this Polaris is been nothing but a pain in the a$$. Just wondering because all my Yamahas don't give me this much grief!!!!
dorian james They're actually very reliable machines with few problems. With all the work you've done, someone has used it hard.....
sixtyfiveford Yeah man I did a compression test this morning, and its at 90 again. I just rebuilt the top end under a year ago. This bike is going to ATV heaven
That sucks.
Did you replace the coil and cdi box that the the problem with mine when I got no spark start with the coil
Trying to bleed brakes on my trailblazer but it has none any ideas
I generally slowly work it in with gravity. So fill the reservoir and loosen a bleed screw by the wheel. Let it sit and occasionally slowly squeeze the back lever and slowly release. This should allow the fluid to start flowing. You can also loosen the brake like at the reservoir to help the fluid flow faster into the master cylinder.
Hey guys i have a 2001 250 trailblazer , cleaned the carbs twice i sprayed cleaner and applied compress air everything seemed clean but it won't idle. The idle screw doesn't have any effect. O it does turn on and run but it is at a high idle. Only with the choke on will it idle properly … Please please help !!!
Sounds like your throttle slide is hanging up make so it doesn't drop low enough. This could be a cable issue or a physical obstruction.
sixtyfiveford Thank you so much I will concentrate on this portion of carb , I'll let you know the out come … Thanks again ! Awesome video .
sixtyfiveford Also I have a different question I bought this bike from a friend and he had it park for about 6-7 years without running. Reverse doesn't work at all is that a major issue ? The shifter when in the back position the bike bogs down a little but doesn't move at all. Thanks for your time !
It takes a little bit of time to remove the gearbox but it is very basic once you open it up. I just sounds like something simple is binding. It is probably something very inexpensive it just takes hours to get to it.
hi,my 2000 polaris trailblazer 250 sometimes backfires when i try to start it with the electronic switch after riding it for a while?? any ideas?
+1982pantro Fuel/fumes could be loading up in the exhaust after sitting while hot.
+sixtyfiveford thanks
+sixtyfiveford hey buddy its me again. i installed the new CDI and new coil on my 2001 polaris trailboss 325 2x4 and still no fire i disconected the black wire from the new cdi and started but died few seconds later. im going crazy there are no poched wires anywhere the atv is in very good condition. also i cant find anything on the web to show me where the gas lines to the carburetor are supposed to go. i just want to make sure yhey are all connected well.sounds like a gas issue to me.canyou please show me how the carb gas lines are installed.thank you very much for all of your help.
It seams you have at least 2 issues. The first is your kill switch is killing the spark. But you're removing the black wire will bypass that. So you're left with fuel delivery or compression issues. If you can't get it to restart with a "LITTLE" starting fluid after it dies you need to check the compression. A cold engine will have higher compression than a motor that is even slightly warmed up so sometimes they will start but not continue to run.
+sixtyfiveford on the carburetor,on the side where the idle screw is,there are two pivots where you connect the gas hose, they are close almost on top of each other, i have the hose conected to the top.is that the right place? ?
Can someone tell me what’s the part number of this carburetor I’m trying to buy a new one and I can’t find the part number
Go to rockymountainatvmc.com and look up your machine. Then go to amzn.to/34HFVae and enter your machine and see if you can find one.
hi, i have a 2000 polaris trailblazer 250 and it runs for about 15 minutes the it dies i wait about minutes and starts fine but then dies again after 10 minutes.please help me i dont know whats wrong with it. i also noticed theres lil gas coming out of vent lines. please any input would help.thanks
+1982pantro You're fuel filter is more than likely clogged. It sounds like it's limiting the fuel flow, so though fuel can flow into the carb it can't keep up with the demand of the engine.
thank you very very much buddy,i just bought it for 400 dlars and i was afraid i was going to spend more on the top end,ive been reading alot of blogs and some people said they were having the same problem and had to do a new top end,the local shop here in az is very expensive because they are the only ones around where i live,and thanks to your carburetor cleaning vid i was able to do mine. i just placed my order on ebay for a new filter,the one on the quad looks old and dried,i didnt know such a small thing can stop the machine from running. one more thing if it came down to having my top end done what do you thing ill be looking at price wise? thank you very much for taking the time.
I did the top end myself last year in an 01 for around $30. All you generally need is new piston rings.
thank you,illwait a couple of days until filter arrives,I'll plug it in and see hoe it goes. you have a new loyal subscriber. I'll keep you updated man,thanks.
Generally a top end that has low compression will start when cold but quickly die within minutes and not restart until completely cold hours later.
What size wrench did you use for the main jet?
+Ed Friesen I believe it was a 8mm(same as 5/16")
+sixtyfiveford thanks man. Great video by the way.
ok. I must be mentally challenged. The choke cable? I unscrewed the 1/2" brass fitting on the end of the cable but the actual inner cable is still attached. help please!
+Randy Osborn
OK. Never mind. Mine was so massively stuck that I had to pull on it to the point I thought I was going to break it. (No wonder my bike didn't run right) Now, on to the cleaning...
+Randy Osborn I'm glad you got it freed.
+sixtyfiveford
Thanks man! Great vid. Took me about 2 hrs. She started 3rd pull. Running great. Wont let gas set in it next winter. Ha!
Next project gonna replace or rebuild the rear (foot) brake master cylinder. I own 3 popos and none of the foot brakes work?
Can you do a removing and putting it back again
My polaris 250 has a gas problem to the muffler
Is it a 2 cycle
Yes. But it injects the oil separately through a tank mounted on the front vs mixing the gas oil yourself. However if you don't trust the oil injection system you can mix it yourself and add gas/oil 2 stroke mix to the main fuel tank
Is this a vm30 or 32? thank you!
allan cooney I'm not sure... The rebuild process will be the same for both as the only difference should be a 30mm bore vs a 32mm bore.
Hi, Were do the hose go to the carburetor???
Fuel line? connects to the fuel inlet on the side of the carb.
What about little black hose on the bottom...that has a clip to it?
small black hose?
Right hand side?
It is an overflow drain. If the fuel level gets to high from the atv being at an extreme angle or something it drains excess fuel out this hose onto the ground. It's not really important. The other misc lines are vents for the carb bowl.
Thank You..It all work out run like pussy cat.!!!
how do you remove the chock cable from carb
Craig Spears It should unscrew with the bolt.
Decompress your choke first should come right out.
Thanks guy always wanted to know how to do this . perfect. Thanks alot.
Roger Bradshaw Thanks for watching.
It's a 2003 still got the original tires on it
Hey I have a issues with with my polaris 250 traiblazer I did what said on the video but now I can't make to run. I been messing with the air screw but still it's. Hard. There's anyway u can hit me up or give me u number. So I can explain better tank you
Miguel Cervantes These are fixed jet and you really can't adjust them(only very fine virtually unnoticeable adjustments). First: These are notorious from foul running due to low engine compression and running poorly due to fouled spark plugs. If it ran great and you just let it sit for a long time then the carb could be the issue. If it slowly developed this issue then it is likely compression related. If it is hard to start, the air passages I show at the mouth of the carb are dirty and or the main jet. If it sputters and bogs as you try to accelerate the main jet is dirty. If it won't idle then the idle circuit/jet is dirty. There are a lot of tiny passages that even I miss once in a while an have to take a carb back apart.
Already. Clean the carb 4 times. I been messing with the air screw I did turn on. But it turn off again it's hard to turn on again when it was on u hear a knocking sounds I took the cilinder offf and on the piston has little play I don't know if that's the way it's suppose to be like dat I haven't check the compression yet don't know how to do dat this is my number call me plz 7135303920 so I can explain u better
If you've cleaned it 4 times it should be clean. Diagnosing over the phone/internet is hard and virtually impossible.
Knocking is not good nor is piston play. It is more than likely piston slap and worn rings. I show basic piston ring replacing here: th-cam.com/video/cjKruxKR4QE/w-d-xo.html
Sorry, I don't have this Polaris anymore.
Fellow door guy as well?
The Doors?
@@sixtyfiveford , I see a broken garage door spring you are using as a paper weight
@@jruda60 oh that. I don't do doors for a living, just as part time for friends and family.
carb work on the 1987 polaris 250 trail boss i meant to say
I got a polaris 250 trail boss It was running fine then we run out of gas after filling the thank did not want to start. do you think something/trash went in to the carb, do you think I need to do what you did in this videos?
You have an air lock. Put your mouth/hand over the gas tank(cap off) and blow to pressurize the tank. This will force fuel into the carb.
sixtyfiveford ok kool I will do that. (I haven't had time to mess with it ) Thank you!