your video's on carbs has helped me greatly. I fought for 2 weeks straight trying to figure out the carbs on my 1994 Virago. "You are a Gentleman, A Scholar, and a Judge of Fine Women "
@@Dowent it's 130+ videos it may as well not be in a play list. No one is going to scroll threw and find the right series within in the series. Also you can't just hit back in the video
YES ! seriously, I really like this mini series and like to reference back to it every time I do carb tuning, but fumbling around looking for the next show is ridiculously annoying
Thanks for the down to earth 🌎 explanation of what the needle jet does. I will use this info to dial in my four wheeler tomorrow, as it's been sputtering through the midrange after replacing the carburetor. 👍
Hi Justin. I own a 1998 Yamaha R1. That is hydrologic locking due to fuel seeping out of the carburettors. While parked over one or two nights. It's also ending up in the motor's engine oil. The last oil change I drained 5.2 litres of fluid from the engine. The engine only requires 2.9 litres of oil.
I'd watched a ton of carburetor videos, both for cars and bikes, and while the engineer in me understood the principals, it wasn't until I took one apart to thoroughly clean and re-jet that I really felt comfortable with these contraptions.
I feel like I’m so close everything runs near perfect except for immediately cracking the throttle open fast, initial bog or drops on its face like it wants to die but only if twisted fast smooth throttle roll and everything runs great just really need that initial crack to be there especially in the off road turns… man once that bog hits you’re heart just breaks…
Question: is it easier to start up a 1 cylinder bike as compared to a 2 cylinder bike? Maybe 2 cylinder need more electricity to start as compared to 1 cylinder
Love your vids brother. This bike I'm working on dies upon throttle unless i spray the carb with fuel, then it revs normally. I'm goin to try and shim my needles cause it's only thing I have not done to these carbs and it's so confusing why the bike isn't running properly still after all I've done to it.
50cc we always on the max capabilities, my street legal supermoto goes 49 mph, gonna put a sport exhaust and a sport air filter and hope for better results, closer to 60 i hope
What would it tell you if the engine will run perfect without the airbox on, once it is added, it starts to bog. Then add the filter and airbox cover, it runs at 90%??? Been stumping me, and it's a brand new good aftermarket carb. Loved the vid, i'll try to apply some of the stuff to my problem!
I never get easy cold start with my 2 stroke, and have setting air mix many time. But when it start i am good to go and get hard again when the engine is stop even for just 30 minute
My KX125 carb was leaking when turned off so I did a rebuild. (I live at very low altitude & bike is stock except aftermarket exhaust and some porting) Other than that Bike was running pretty strong but was definitely due for a new top end which I did. (I was getting a good bit of spouge at the silencer which I always saw as normal for a 2 stroker but I am repacking the silencer as well.)The carb kit had all stock size components so I used those. The old main jet was a 400 but the stk one I used was a 420. The clip on the old needle was on the 2nd slot down The replacement needle is the exact same type but factory spec calls for clip in 3rd position. Since I already have the main going from 400 to 420 what do you recommend for the clip position as a starting point?
xr650r slow speed jet t 65 trying to avoid off idle bog 175 main 3rd clip down ...hard tune ..tips? Would the main jet setting affect the off idle bog ? Would the idle air needle compensate for this ? How about live computer metering ? ride safe G
What he says. At part throttle does it rev up smoothly or does it hesitate then rev up wildly. You will feel it riding. Hesitation, then revs suddenly but with weak power. Common with vacuum carbs as they're jetted for fuel economy and environmental b.s.
I have a little Suzuki gz250 that I recently cut the baffle off. I’ve read that can cause lean issues but I couldn’t imagine it’d be major as the bike ran great for an hour after. Should I do some type of adjustment on my carb somewhere to balance for the new straight pipe?
What happens if your bike runs great but the clip positioning is at the very top. Therefore the lowest/leanest setting for my needle. Do I need to jet down? Or leave it if it’s running good?
Bike with fresh work done with new cylinder kit ..is its carb require couple of settings after 500kms done or it can be tunned just one time when job completed in first attempt..
What is difference between needle lean/rich adjustment and AFS lean/rich adjustment...my bike seems to ride fine for few meters and then when the carburettor oil starts to come down in the carb it starts to die for few minutes and then its fine.
So I have a 2001 ktm EXC (2 stroke) with a Keihin pwk (it oem) I finally have everything tuned in well but I need a leaner needle and can't find them anywhere or find out what needle I have now.
Is there anyway to know which needle to use? Ill clarify, im working on neighbors honda 50 and got a bag of parts, there is a bronze thicker needle and a silver thin needle in the bag with other mismatched parts...
I have a problem with my KTM 250 2T The tool has not been used for almost a year This week I found time to take care of it, I did a fuel-oil change, I cleaned the filter plug, everything, finally I tried to start it, but the car could not start. It only started with carburetor spray and shut off straight away From that I understood that the carburetor needed to be cleaned and that's how I did it. Now the problem is different, the motorcycle engine goes straight up to very, very high levels I played with the air-fuel screw but unfortunately it didn't help. Is there a situation where the problem is different? Something in the carburetor maybe? need help please
In a 4 carb setup, where the 2 middle carbs have a larger size jet than the outside 2 (due to higher heat), do they also have different needle hight settings?
How about telling me how to hold the needle back in place? There's a little spring that sit on the barrel somehow... I just dont know how it sits or clips in
When I first started riding, my jerk friends would hit that kill button on me. 😂 took me forever to realize it. I felt dumb n they laughed hard. Things u don't know as a new rider😂 Cheers to ya. Thought my bike was dead
I can't find info and desperate did a rebuild adjusted valve legitimately off the bike verifyd carb cleaner shot put of every port carbs syncd fine it idles fine wot it amazing now sounds way better I cruise and lose here holding rpms best way to describe it high gear low rpms holding throttle it runs fines keep holding throttle same spot but starts to sputter comes out of it wot right away this narrowed it down correct?
Hi, I use tm32 for my air cooled 250cc bike. The problem am facing is, the engine in off condition if we give the throttle means the engine gets richer and takes so many kicks to start. Kindly give me a solution...
Standard jetting should but may not be in the middle, then it's fairly close for hot or cold weather. Fuel amount in the tank or altitude will have more effect. In hot weather try keeping a full tank, at high altitude half full.
According to the specs I'm supposed to set my jet needle clip on position 4. What they don't tell you is if 4 is the top notch or the 4th notch down on the needle. Does it go 1 - 4 from the top down or vise versa? Thanks.
1 is the top setting with the top of the needle furthest down closet to the clip. Count from top down, so when you have the clip on the bottom groove and more of the needle sticking up above the clip, thats position 3 or 4.
the question remains.. when it says "set the needle clip in the x position FROM TOP/BOTTOM" is the "top" the furthest point from the tip of the needle? and the "bottom" the closest point to the tip of the needle? I've always been confused about that and haven't seen any clarification on this
@@4x4Mudmaster you completely missed the question haha. if i were to tell you "3rd position from top", what end would you say is the "top"? the pointed end of the needle, or the blunt end?
@@hrsey71 The end of the needle where the clip goes is the "top" of the needle, the groove closest to the "top" of the needle is position one, 3rd position is the 3rd groove from the top (more towards the pointy end)
Curious... what makes a mini bike backfire on acceleration? Timing appears to be on the marks exactly, new carb but new oversized chrome air filter instead of the OEM tin can. Honda Trail Mini ct70. Serial number on block says it's a z50 but head says 72.cc. Runs ok but has no real power like a friends ct70 and when hot it sputters and pops on acceleration. Any help would be appreciated. Thanx4sharing, thanx4caring!!
@@tomgarrett687 a quick question bro...I have a Honda storm 125 cc and it has a CV carb ...the bike runs awesome but whenever I start it and try turning the throttle its sputtery for a few seconds and then smooth out and as the bike warms the throttle response is ok , my question is, is that normal for cv carbs ( because of vacuum) or is there anything I can do to fix this ? Thanks
i tried to clean my carburetor and when i put back on now it runs on three cylinders The fourth cylinder only fires when i start her up and then it stops working, Does anyone have any idea shy it does that?
The hardest thing about adjusting the carb is finding these videos in the correct order.
Good videos tho 👍
That's true. I thought they said we could find links to the other videos in the description but they're not there. Great videos though.
That's what I'm trying to find atm.hummmm
yea. this is the most important and confusing part. would be a great video or would be nice if it was included in the first video of this series
your video's on carbs has helped me greatly. I fought for 2 weeks straight trying to figure out the carbs on my 1994 Virago. "You are a Gentleman, A Scholar, and a Judge of Fine Women "
Really easy to understand instructions! This whole series is awesome. Making a playlist in order would be wonderful.
guys I think you need to put the series on a playlist or something
It has been for years, check their playlists section.
@@Dowent it's 130+ videos it may as well not be in a play list. No one is going to scroll threw and find the right series within in the series. Also you can't just hit back in the video
Came here just to say this 4 years later.. 100+ videos to go through 😅
YES ! seriously, I really like this mini series and like to reference back to it every time I do carb tuning, but fumbling around looking for the next show is ridiculously annoying
I’m on day 250 on trying to find the other videos 🤣🤣🤣
Well explained without using more time than needed 👌👍
Since you have done so well with carbs, how about an article on another vanishing art... ignition points?
Hahaha!
Thanks for the down to earth 🌎 explanation of what the needle jet does. I will use this info to dial in my four wheeler tomorrow, as it's been sputtering through the midrange after replacing the carburetor. 👍
Most understandable needle position video I've seen.
Yes simple and understandable info. Its what I been looking for lol
Perfect and straight to the point great tutorial 👌 👍
Hi Justin.
I own a 1998 Yamaha R1.
That is hydrologic locking due to fuel seeping out of the carburettors.
While parked over one or two nights.
It's also ending up in the motor's engine oil.
The last oil change I drained 5.2 litres of fluid from the engine.
The engine only requires 2.9 litres of oil.
Dude you are awesome. I have looked at ALOT of vids and yours explained things prefectly. Thank you for posting and hope to see alot more good stuff.
Thank you so much even know this video is 3 years old it is definitely helpful
Awesome video, helped me tune a lean spot out.
Man thank you for the video! Helped me a lot!!! Grip it and rip it brother!
Him: How often are you wide open?
Me: If you're a cop, you have to tell me, right?
How about a video on leak testing on a two stroke?
You could feature the Motion Pro kit.
Trying to get a vintage Yamaha scrambler running. Thanks!
i watched all the carb videos and this is still black magic
I need to watch these 5 carb vids a few times with an old carb to hack-up on a bench. I figure once I've done that a time or two, I'll be set :-)
I'd watched a ton of carburetor videos, both for cars and bikes, and while the engineer in me understood the principals, it wasn't until I took one apart to thoroughly clean and re-jet that I really felt comfortable with these contraptions.
Wow. This is great info.. even better.than the last host.. keep up the good work. Cheers.
How about a vid on balancing/syncing multiple carb setups
Good straight forward video.
I feel like I’m so close everything runs near perfect except for immediately cracking the throttle open fast, initial bog or drops on its face like it wants to die but only if twisted fast smooth throttle roll and everything runs great just really need that initial crack to be there especially in the off road turns… man once that bog hits you’re heart just breaks…
Thanks for the carb tech! Great articles on diy carb care and tuning!
Question: is it easier to start up a 1 cylinder bike as compared to a 2 cylinder bike? Maybe 2 cylinder need more electricity to start as compared to 1 cylinder
Love your vids brother. This bike I'm working on dies upon throttle unless i spray the carb with fuel, then it revs normally. I'm goin to try and shim my needles cause it's only thing I have not done to these carbs and it's so confusing why the bike isn't running properly still after all I've done to it.
50cc we always on the max capabilities, my street legal supermoto goes 49 mph, gonna put a sport exhaust and a sport air filter and hope for better results, closer to 60 i hope
What would it tell you if the engine will run perfect without the airbox on, once it is added, it starts to bog. Then add the filter and airbox cover, it runs at 90%??? Been stumping me, and it's a brand new good aftermarket carb. Loved the vid, i'll try to apply some of the stuff to my problem!
I never get easy cold start with my 2 stroke, and have setting air mix many time. But when it start i am good to go and get hard again when the engine is stop even for just 30 minute
We want Ari back! ;-))
It would have been nice if you could have put up links to the preceding videos.
Great video hands down
My KX125 carb was leaking when turned off so I did a rebuild. (I live at very low altitude & bike is stock except aftermarket exhaust and some porting) Other than that Bike was running pretty strong but was definitely due for a new top end which I did. (I was getting a good bit of spouge at the silencer which I always saw as normal for a 2 stroker but I am repacking the silencer as well.)The carb kit had all stock size components so I used those. The old main jet was a 400 but the stk one I used was a 420. The clip on the old needle was on the 2nd slot down The replacement needle is the exact same type but factory spec calls for clip in 3rd position. Since I already have the main going from 400 to 420 what do you recommend for the clip position as a starting point?
xr650r slow speed jet t 65 trying to avoid off idle bog 175 main 3rd clip down ...hard tune ..tips? Would the main jet setting affect the off idle bog ? Would the idle air needle compensate for this ? How about live computer metering ?
ride safe
G
This Is great! I’m going have to back up and watch the other carb instalments. My ZR750 has a flat spot about 6k rpms. This might be the issue.
We have the same bike :)
1991 for me.
@@patmclean1951 same as mine😝
I'm just wondering if adjusting the clip will do something to the top 20% of the throttle?
Question:
2001 Suzuki ls650 stock
At 4,000 rpm (out of 6500) the motorcycle feeling like a pulsing surge. Is that a rich or lean condition?
What he says. At part throttle does it rev up smoothly or does it hesitate then rev up wildly. You will feel it riding. Hesitation, then revs suddenly but with weak power. Common with vacuum carbs as they're jetted for fuel economy and environmental b.s.
How do I know if I need to do this, or adjust the screws?
I really liked this video.On xs1100 special yamahas mikuni carbs what does the R stands for as part of the jet ID or size.Thanks.
Video helped me out so thank you
Very informative 👍🏼
I'm interested to know the setting you ended up on with the gas gas as they are a bit of a nightmare and I have one that I need to get right.
What about if the bike is running super lean at one and a half turns (air filter side)? What should i go for a bigger or smaller main jet?
When you adjust the needle to do more on petrol should it go down or should it go up. presently my needle position is in the middlecut
I have a little Suzuki gz250 that I recently cut the baffle off. I’ve read that can cause lean issues but I couldn’t imagine it’d be major as the bike ran great for an hour after. Should I do some type of adjustment on my carb somewhere to balance for the new straight pipe?
What happens if your bike runs great but the clip positioning is at the very top. Therefore the lowest/leanest setting for my needle. Do I need to jet down? Or leave it if it’s running good?
I'm Brazilian and we don't have much information about needles, do you know if their adjustment influences the bike's height?
Never. Its just fuel adjustment.
Bike with fresh work done with new cylinder kit ..is its carb require couple of settings after 500kms done or it can be tunned just one time when job completed in first attempt..
Where should i try to check or adjust if my bike backfire or cough on low rpms sometimes? :/
I replaced the needles in my carb. Is it possible that this will stop the engine from engaging if the starter is functioning?
What is difference between needle lean/rich adjustment and AFS lean/rich adjustment...my bike seems to ride fine for few meters and then when the carburettor oil starts to come down in the carb it starts to die for few minutes and then its fine.
So I have a 2001 ktm EXC (2 stroke) with a Keihin pwk (it oem) I finally have everything tuned in well but I need a leaner needle and can't find them anywhere or find out what needle I have now.
Is there anyway to know which needle to use? Ill clarify, im working on neighbors honda 50 and got a bag of parts, there is a bronze thicker needle and a silver thin needle in the bag with other mismatched parts...
Have a Kayo K6R "nibbi carb" that has a bog issue going from idle to heavy throttle is fine in every other position and scenario. Make it richer?
Thank you!
I have a problem with my KTM 250 2T
The tool has not been used for almost a year
This week I found time to take care of it, I did a fuel-oil change, I cleaned the filter plug, everything, finally I tried to start it, but the car could not start.
It only started with carburetor spray and shut off straight away
From that I understood that the carburetor needed to be cleaned and that's how I did it.
Now the problem is different, the motorcycle engine goes straight up to very, very high levels
I played with the air-fuel screw but unfortunately it didn't help.
Is there a situation where the problem is different? Something in the carburetor maybe? need help please
In a 4 carb setup, where the 2 middle carbs have a larger size jet than the outside 2 (due to higher heat), do they also have different needle hight settings?
No. They run a little richer right through the range.
This man has never owned a grom clone. wide open all the time
How about telling me how to hold the needle back in place? There's a little spring that sit on the barrel somehow... I just dont know how it sits or clips in
LOVE U BRO. lol thank you for all this info.
Well explained bruh...nice work
I have a doubt regarding the kill switch.
What if i accidentally turn off the kill switch at 60 mph?🤔
Nothing much happens..... The engine shuts down and you better grab the clutch
When I first started riding, my jerk friends would hit that kill button on me. 😂 took me forever to realize it. I felt dumb n they laughed hard. Things u don't know as a new rider😂 Cheers to ya. Thought my bike was dead
Please talk about straight exhaust pipe and stock exhaust
Great stuff, thank you.🍻
I can't find info and desperate did a rebuild adjusted valve legitimately off the bike verifyd carb cleaner shot put of every port carbs syncd fine it idles fine wot it amazing now sounds way better I cruise and lose here holding rpms best way to describe it high gear low rpms holding throttle it runs fines keep holding throttle same spot but starts to sputter comes out of it wot right away this narrowed it down correct?
I jus broke the end part of my needle in my 49cc moped kinda worried about driving it will it be ok
My 2501966 Ducati scrambler reves higher when it is lean over or on the kick stand .Is it the need jet (Dellorto UFB24BS cab)
Why is this not in a series!??!
My bike bogs if you gun it for a split second then runs perfect should I richen the needle one position?
What gets me is they say get the main jet jetting 2nd before the needle. Well how are you going to get to wot if your mid range is wonky.
5th out of 5 carb vids.
How do you move the clip?
Para una rieju mr 300 que agujas y posición del needle poner a 1,100 pies de altura?
I have a 2003 arctic cat 300 4x4 and the exhaust keeps getting red hot. What should I do to it?
Hi, I use tm32 for my air cooled 250cc bike. The problem am facing is, the engine in off condition if we give the throttle means the engine gets richer and takes so many kicks to start. Kindly give me a solution...
SO FOR HOTTER WEATHER DO I EED IT MORE LEAN OR MORE RICH? LOWER OR RAISE THE NEEDLE THINGY?? ANYONE ON THIS? PLEASE HELP, THANK YOU
Standard jetting should but may not be in the middle, then it's fairly close for hot or cold weather. Fuel amount in the tank or altitude will have more effect. In hot weather try keeping a full tank, at high altitude half full.
Sir i own a Suzuki gs 150r...please guide me how to tune carburetor for maximum mileage and good performance..thanks
I have ac125 virago. The bike wont accelerate on full throttle. Itsxa new carb could the needle position be wrong or the main jet too small
Try syncing 4 carbs on a 81 Kawasaki kz650 csr h1 its a royal pain took me 4 days to finally get it right with only a screw driver
In the books I've got you ride the bike for a few miles then inspect the plugs to determine if it's too rich or too lean.
That's an old book. With unleaded fuel it's hard to tell. Leaded fuel would give shades of brown or black if rich.
@@redtobertshateshandles you are right, very old book.
great job!!!!!! thank you!
1:07 boy you about to poke yourself with that thing
According to the specs I'm supposed to set my jet needle clip on position 4. What they don't tell you is if 4 is the top notch or the 4th notch down on the needle. Does it go 1 - 4 from the top down or vise versa? Thanks.
1 is the top setting with the top of the needle furthest down closet to the clip. Count from top down, so when you have the clip on the bottom groove and more of the needle sticking up above the clip, thats position 3 or 4.
Whats the reason why gasoline comes out on the mouth of the carburetor when going full throttle?
Can you please help me.
My 2006 crf250r pops when laying off the throttle, idk what’s up with it . I re jetted it still can’t seem to figure out whats wrong with it
Omg not another carb video!! 🛑!
Yamaha wr 450 2004 needle position?
how do you adjust a carb on a roadstar if it runs rich
the question remains.. when it says "set the needle clip in the x position FROM TOP/BOTTOM" is the "top" the furthest point from the tip of the needle? and the "bottom" the closest point to the tip of the needle? I've always been confused about that and haven't seen any clarification on this
The top end is always where the clip goes.
@@4x4Mudmaster you completely missed the question haha.
if i were to tell you "3rd position from top", what end would you say is the "top"? the pointed end of the needle, or the blunt end?
@@hrsey71 The end of the needle where the clip goes is the "top" of the needle, the groove closest to the "top" of the needle is position one, 3rd position is the 3rd groove from the top (more towards the pointy end)
@@billmastrippolito7132 thanks!
Can you help me ? If i spray ether in carb it will run but it wont start if not sprayed
Curious... what makes a mini bike backfire on acceleration? Timing appears to be on the marks exactly, new carb but new oversized chrome air filter instead of the OEM tin can. Honda Trail Mini ct70. Serial number on block says it's a z50 but head says 72.cc. Runs ok but has no real power like a friends ct70 and when hot it sputters and pops on acceleration. Any help would be appreciated. Thanx4sharing, thanx4caring!!
Leak in air system
Can someone please help me my bike dies when I'm full throttle can moving the needle cause it when you start in the middle and move it one down or not
What if it's not holding an idle
If it’s on a motorized bicycle probably an air leak
Try cleaning the carb jets good
Does carb need 2 be off 2 do this ?
can anyone help can the needle cause bogging when under load if its not in the correct position
Wat happens if I put my clip one more up from the normal position? Will it change the spped of my motorcycle or decrease the speed?
It will run leaner. If it coughs out the carb, its too lean
@@tomgarrett687 a quick question bro...I have a Honda storm 125 cc and it has a CV carb ...the bike runs awesome but whenever I start it and try turning the throttle its sputtery for a few seconds and then smooth out and as the bike warms the throttle response is ok , my question is, is that normal for cv carbs ( because of vacuum) or is there anything I can do to fix this ? Thanks
I full throttle and it won’t rev at full throttle idk where to put the needle
WHWER ARE THE OTHER VIDEOSSSS?????
Can u fix 100cc carburettor to a bigger bike 150cc
i tried to clean my carburetor and when i put back on now it runs on three cylinders The fourth cylinder only fires when i start her up and then it stops working, Does anyone have any idea shy it does that?
Amazong video
My Honda revs high unexpectedly?