How have I never come across this channel?? But this point is very important!! I spent over a year chasing an off-idle bog problem on both my crf-150f and my crf-230f. After watching your other video I richened the float and now the throttle response is crisp!!
This is so true, i waste my times do jetting without concern about my float level. After set my float level in correct height, i really feel the different power of my 2 stroke bike.
Cameron I ordered a Digital Caliper so I could dial on my float height.its now 7.51mm. Since I 've owned the bike, it's NEVER FOULED a plug. I went riding last year and contracted a bacterial infection that nearly killed me! It was a very serious infection. Anyway I'm looking forward to being able to ride again. I want to thank you for walking me thru things. I had an87 cr 250 that was so easy to work on. It ripped. I've been bindge watching your channel. I just wanted to THANKS. Your the BEST.
I didn't think about that since I would need to allow more gas in my case for a air filter pod and a jet upgrade and I need to give it headroom and the calipers are the best thing you could use. I was pulling my hair out wondering why I was either fouling plugs , stalling at stops, or just plain unstable like hesitations and knocking. Oh and BTW I'm happy for you youre getting over that bacterial infection. I have an immune deficiency and something like that would indeed end me. Been the sick kid so I never got on the road and at 27 gifted a 49ccmoped and have been doing anything I can to it to understand it all and learn things one step at a time. 2 months later I got a 1992 Suzuki gs650g sitting in my back yard I got for free that was dumped and needs a while lot of love, blown gaskets. Riding has actually kept me sane through being sick and depression. I'm glad youre getting back on the bike after a scare like that. Stay safe brother
@@alien_man1669 thanks man. John when you are in a bad way, you really find out who cares for you. In my case a 7 yo child my GRANDNEICE was the only person who cared about me. I was so hurt by my so-called friends, I still don't speak to them. Thanks again.
Hi there Cameron,I hope your doing well,thank you so much for the rundown on all the do's & don'ts on how to receive the best of the carburetor ,excellently shown & Excellently spoken, thank you & take care friend ..
I end up checking a bunch of carburetor floats, because owners end up messing with it. TIP: Always check the REAL fuel level on the float bowl in this way. Place the bike perfectly leveled (no side stand sorry). If not equipped already, put a transparent hose in the bowl drain. Open the fuel petcock. Lift the tip of the hose to carb level open the drain... The level on the inside and outside of the bowl will be perfectly shown... Never mess with the float level before the REAL check. ;-) Can be checked also while motor running, good for noticing flow problems, etc. ;-)
would you mind to demonstrate this in video- i read it 10 times, still confused what you trying to explain. how we use to check- just without mounting carb , just hold it in hands to tank attached with carbs bottom screws removed, open tank drain, let the petrol fill up carb, than remove bottom of carb and you actually see how much petrol in there
Jesus! Why havent i've seen your channel before? Great stuff! I was just currently adjusting my float, but i really didnt get the hang of it of how "increasing" it by pulling it downwards the "tab" Thanks for the info!
That made perfect sense! I had great help with your guide aswell for adjusting the chain! The 3 thumb rule seems like the perfect setup aswell! I'm still trying to get the hang of the float though... got to rewatch the video a few more times! I just dont really understand at which point i should start to measure.
The float height should be measured from the float bowl surface to the top of the floats. Position the floats so the float needle seats, but does not push in the center cylinder. Once you have it apart and check it out you'll see what's going on.
Ok, my center cylinder seems to be really sensitive, doesnt matter how i place my float. As soon as the float needle moves, so does the center cylinder aswell! It's a Keihin FCR 37 i got.. the typical one with Kawis and Zukis
hope you're feeling better and kicking some cancer ass today! rode my 05 cr250 today for first time on track, corners, whoops are great susp is awesome. carb bowl leaking so i'll build it tomorrow , everything else is good. get well and get back on your bike and keep that positive attitude!!
the float hight will alter the level of fuel in your carburettor but only changing the jets will alter the jetting!!! The amount of fuel getting through to the engine will only really be affected by the float hight being too high and thus, the fuel level too low so that the fuel can't be drawn through the venturi and jets into the engine. The only real consequence of having the fuel level too high is that the carburettor will overflow and you'll lose fuel when at idle. severely high levels will flood the engine at idle but this still doesn't change your jetting, just your fuel level!
I aquired a 1990 CR 500 in mint condition but it runs rough. It starts right up, but when I go to ride it loads right up and wont clear out in any gear. I bought a carb rebuild kit for it and I am about to go thru it but What do you think?
Ok I watched and listened to your video again and you said to the top of the floats . Now my question would be is it that way for every carb . Like an industry standard , measurements just very ?
i have worked on everything from weedwackers to industrial diesel and natural gas engines and i never knew you were ever supposed to touch your float level, it makes sense sometimes tho but you would think factory float height should be the only float height, but what i think and the facts can be two different things
TBH I don't even need to watch most of your videos. BUT, I do because your videos are great quality and you're great at teaching how to do the task! Thanks for the videos
Holy shit, taking the rear shock off, taking the seat off, the handlebars off, and both tires have to come off and then the rubber off the rim just to get to the carb.
Opferman Motors Dirtbiking you don't have to do all of that. It's faster if you remove the subframe all together to take off the carb on every bike, I always do it.
02:40 nope! Most Japanese bike carbs will will use Japanese industrial standard screws that are easily stripped with most standard Phillips screw drivers. You can identify these by a small dot next to the hat cross section of each screw (search for an image). Spending a little time and money acquiring a set of JIS screw drivers will save you alot of time and money acquiring a new carburetor.
He didn’t say anything about using a Phillips head screwdriver. He just said “your screwdriver”. Yes, we all know about JIS. Except for technie87’ who apparently is an expert on Japanese engineering (because he was in Japan), and therefore claims it doesn’t exist.
gezz.. my hated part on servicing bikes. It's really a test of patience than mechanical skills. But it's worth it getting it done right the first try than having to pull it out once more. Nice vid.. detailed enough.
If i increase the float height by by bending the tab down, does that mean that I'm leaning out or making richer? Thank you for your videos and your bikes are super clean, wish my YZ250 were as clean.
Ok I'm just a little confused . Do I measure from the middle of the carb to the top of the floats ? Or to the seam in the float . On my 2003 Suzuki rm125 in the service manual it says the number is 8.7mm but doesn't show from where to where . So if you can please help me so I can make sure I'm doing it right . Thank you . And again merry Christmas
Thumbs up brother. You explain things well. I already knew how to do it but if I didn't your video would've been helpful, thorough and easy to understand 👍
@@CameronNiemela I know is an old video, but maybe you can you help me with some advice... I changed all the gaskets inside the carb (keihin PWK36), flotor level is correct, runs fine when open throttle. The idle I cant figure it out, tried multiple pilot jeting from 40&45 (second position for needle) idle stay very high or die, pilot nr. 48 in second needle position is not running well on 1/4 throttle, seems to much gas. Put needle to first position and with pilot nr. 48 have more grunt, more linear power delivery, seems to have better idle but it still drops from high rpm to very low after few seconds. Should I try with pilot jet 50 or smaller? or what to try next? this is killing me :))
Logan880121 too high the bike will piss out fuel and too low might not give the bike enough fuel when full throttle so it might cut out. Just check what it should be and adjust to spec
Noticed on a buddies bike yesterday that hit bleeder tubes on the back of the carb were blocked off with screws. Does that cause an issue? I’ve never seen it before, he just purchased the bike second hand recently
Are these carburetor rebuild kits pretty universal if you just need to replace things like the float ,needle and seat? I have a 1990 KX125 with a Keihin pwk carburetor
Amazing video! I just have a quick question So I recently brought it to the shop for a carb jetting and it worked perfectly fine idles, doesn't bog still up to this day. But what concerns me is I see fuel leaking out the overflow tub when the bike is barley tipped over. When the bike is on the triangle that's when fuel starts to drip out. The bike also does this when it's running too but u have to lean it over a tad more to see it dripping. I know this is not normal because I have a race bike and pratice bike and my race bike does not do this. Thanks!
Thank You! That definitely sounds like the float height is off. You will need to increase the float height since too much fuel is being stored in the float bowl.
What's the difference between the red shock coil and a yellow one? My '01 cr250 has a red one like your 125, yet every single other '01 I've seen has a yellow one. Thanks.
All Honda two strokes in that year range come with yellow springs, but there are people like me who paint them red. I'm guessing that's the case with your bike as well. I can't stand the yellow spring.
Thanks for getting back to me quickly. Is the sticker on the back of your shock red as well. The reason I ask at all is that sometimes manufactures will color code their product according to specs and I wondered if Showa did that here.
hey question why do you hold the carburetor upside down at a 45 degree angle doesn't it make more sense to hold it in the orientation the carb would normally sit??? Thanks
Anyone know what i have to change on my 26mm molkt on a lifan 125 to get rid of bogging? I have tried from 100 to 122 main jets (102 is the stock one) and nothing is helping, i have also tried 10 sizes bigger pilot jet, im not sure if it helped, but maybe it did a little. I tried a cloth around the air cleaner that removed the bog but it doesnt work well with it on. So do I have to get bigger or smaller main jets and/or pilot jets? I appreciate if someone could help
My carburetor is running great but every hour or so it fouls the plug I was told to make my main jet smaller . can I Sutter it close and start drilling with the next smaller bit size that is smaller then my original jet I’ve been dealing with this issue for about 5 years now. Just been popping in a new plug every time Everywhere Waisting time money and fun My main jet is a AB390 I’m running vforce3 s and a fmf gold fatty . This is the same bike as yours 2007 cr125 With throttle position sensor I replaced the tps and bought the tps tester to check if it was working correctly, what you think 🤔 cam?
I Hava a NIBBI Racing Performance Carburetor 32MM Motorcycle Carburetor, would you know where the two hoses on the side of the carb leads to or where it should be connected to on my 250cc motorcycle? I know where the standard hoses, like fuel and bowl lines connect. But the hoses on the side have me at a loss.
I’m doing a motorcycle mechanic course, I want to be as knowledgeable as you.. are you a certified mechanic And did you go some sort of course for that certificate?
I've gotten to the point I can remove the carb with the bike fully assembled. I'd say its more for dual sport bikes, but as an extreme example if you start out the morning at the base of a mountain and by the afternoon your 10,000ft in elevation higher its nice to swap the jet without disassembling the entire bike and losing things on the trail.. That being said Hondas are even easier because the bowl on the Hondas have a big nut you can remove and don't even have to pull the carb, UNLESS you have to do the float height at the same time, then you still have to pull it (: Haven't heard of many people needing to re-adjust the float height with the jetting however... but I guess it could happen, depending on what type of float you have and how hard your slamming it on the trails all day.
please tell me why. i have kx 80 1991. and it runs without any throttle pretty good and it work really good in low rpm, but if i twist the throttle and in half rpm it sounds like its running lean and it doesn't rev anymore than half gas and sounds like its running rich??
It could be, but the float height would have to be set super high. What's more likely is that the rubber inlet needle in the float bowl is worn, damaged, or out of adjustment so that it's not seating correctly. This is the needle that the float is directly connected to. This valve is the main way that the whole carburetor gets fuel from the gas tank. If this tiny little brass and rubber needle valve is out of whack in any way, it will just stay open and fuel will start overflowing out of the carb and out one of your drain tubes right onto the ground. It could drain your entire gas tank eventually.
I changed to a bigger pilot jet in my Hero Honda Karizma R 2011 carburetor as i was having cold start issues in the morning.....now that the cold start problem is solved....but whenever i put my motorcycle on side stand the engine rpms starts to decline gradually and engine stalls and as soon as i remove it from side stand it is working fine with rpm again at normal range.....may be the bigger pilot jet is giving more fuel to the engine....should i decrease or increase the height of the float bowl pls suggest....😇
now i was cleaning my carb because my bike would bog until like 20 mins after riding it so then i noticed my floats wasnt lining up straight with the carb frame so i bent the float adjustment up but now when i went to go test it alittle more than average gas came out of the carb overflow is that normal? or should i re adjust my floats a little back? the bike did start and run tho
Only if you need to, like if you've fitted a free-er flowing exhaust or air filter or had work done on the head to increase flow rate into the cylinder. You will need to change your jetting if you ride at altitude (3000ft/1000mtrs or higer) and fit a smaller jet due to the thinner air, other than that No!
I have a Mikuni TMX38S carb on my rm 125 I'm pretty sure its stock for the year, at high rpms the bike sputters and doesn't feel like I'm getting 100% of the power could the carb play a factor in this, I've tested for everything else, seals etc and they're all fine?
Hello. I have a Nibbi power jet carburetor for my 250cc. It came with hoses that I am not familiar where to lead them or connect to on my bike. Any help would be greatly appreciated. Thanks.
@@Tahmanakki Honda. I could not adapt the power carb to work with the motor. It would have been sweet if I could. Went with a PZ30 Carburetor from Amazon. Worked perfectly. The exuast end of the Nibbi carb could not be fitted with my motor.
If the float height is below spec, the bike will leak gas out the overflow very easily when tipped to the side. And too much float height will cause the bike the starve for fuel and will be unresponsive to jetting changes.
Cameron Niemela . when the carb is completely upside down should the floats sit level with the mating surface amd the float needle completely depressed?
hey, i have a mikuni tmx 38 flatslide carb on my Husqvarna cr 144. but the bike is bogging and sputtering at low rpms, just like if you hold the chocke in. Any ideas what the problem could be? changing the needle position did not work, the fuel/air mixure screw wont even react.
jr...your srews strip only when using a ANSI style screw driver sold in USA. The screws pitch is JIS...which is different then ANSI. You should ether replace with ANSI screws, allen heads or use the correct screw driver.
removing the subframe and shock just to remove the carburetor? thats a much ya think? good info here though. Another good idea while the carb is off is to check your reeds.
Dude you discovered the second thing in a carburetor, but carburetor have a lot of points to check, unless your an expert leave them alone otherwise bike will never work ok., they are olscholl so even nowadays mechnaics have dificulties in dealing with them.
Cleaned out carb and changed Needle and the other little jets not the adjustable ones just the ones around the floats now quad is bogging from 3/4 rev to full open throttle. Could this be due to foot height?
Alexis Garcia i havnt found it sold on its own but search for your size carb rebuild kit, ive gotten them in those to repair bikes i buy from auctions. gl
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Dude i watch camerons vids all the time. And he definilty got better at commentaing
I was just about to comment the same thing. His comfortability and the way he speaks has really come along way since the early vids. Props to him!
How have I never come across this channel??
But this point is very important!! I spent over a year chasing an off-idle bog problem on both my crf-150f and my crf-230f. After watching your other video I richened the float and now the throttle response is crisp!!
That's great to hear! Glad I could help.
How was your float before was it all slanted ?
@@CameronNiemelathanks for the info i subscribed!😅
This is so true, i waste my times do jetting without concern about my float level. After set my float level in correct height, i really feel the different power of my 2 stroke bike.
Cameron I ordered a Digital Caliper so I could dial on my float height.its now 7.51mm. Since I 've owned the bike, it's NEVER FOULED a plug. I went riding last year and contracted a bacterial infection that nearly killed me! It was a very serious infection. Anyway I'm looking forward to being able to ride again. I want to thank you for walking me thru things. I had an87 cr 250 that was so easy to work on. It ripped. I've been bindge watching your channel. I just wanted to THANKS. Your the BEST.
I didn't think about that since I would need to allow more gas in my case for a air filter pod and a jet upgrade and I need to give it headroom and the calipers are the best thing you could use. I was pulling my hair out wondering why I was either fouling plugs , stalling at stops, or just plain unstable like hesitations and knocking. Oh and BTW I'm happy for you youre getting over that bacterial infection. I have an immune deficiency and something like that would indeed end me. Been the sick kid so I never got on the road and at 27 gifted a 49ccmoped and have been doing anything I can to it to understand it all and learn things one step at a time. 2 months later I got a 1992 Suzuki gs650g sitting in my back yard I got for free that was dumped and needs a while lot of love, blown gaskets. Riding has actually kept me sane through being sick and depression. I'm glad youre getting back on the bike after a scare like that. Stay safe brother
@@alien_man1669 thanks man. John when you are in a bad way, you really find out who cares for you. In my case a 7 yo child my GRANDNEICE was the only person who cared about me. I was so hurt by my so-called friends, I still don't speak to them. Thanks again.
Hi there Cameron,I hope your doing well,thank you so much for the rundown on all the do's & don'ts on how to receive the best of the carburetor ,excellently shown & Excellently spoken, thank you & take care friend ..
Bro looking back really shows how far we ave progressed. Love ur vids
I just really like this guy.
I end up checking a bunch of carburetor floats, because owners end up messing with it.
TIP: Always check the REAL fuel level on the float bowl in this way.
Place the bike perfectly leveled (no side stand sorry). If not equipped already, put a transparent hose in the bowl drain. Open the fuel petcock. Lift the tip of the hose to carb level open the drain...
The level on the inside and outside of the bowl will be perfectly shown...
Never mess with the float level before the REAL check. ;-)
Can be checked also while motor running, good for noticing flow problems, etc. ;-)
That is smart shoud the fuel be at the top of rhe bowl?
@@hardendurobosnia17 2 mm below.
would you mind to demonstrate this in video- i read it 10 times, still confused what you trying to explain. how we use to check- just without mounting carb , just hold it in hands to tank attached with carbs bottom screws removed, open tank drain, let the petrol fill up carb, than remove bottom of carb and you actually see how much petrol in there
This is the best carb float video I e ever seen. Very professional job man.
Thanks Jay!
Another good tip. Replace the outer screws with Allen head bolts. Won’t risk stripping out the bolts anymore and will last longer.
Jesus! Why havent i've seen your channel before? Great stuff! I was just currently adjusting my float, but i really didnt get the hang of it of how "increasing" it by pulling it downwards the "tab"
Thanks for the info!
Thanks for watching!! Bending the tab downwards brings the floats lower, therefore increasing the float height. Hope that made sense.
That made perfect sense! I had great help with your guide aswell for adjusting the chain! The 3 thumb rule seems like the perfect setup aswell!
I'm still trying to get the hang of the float though... got to rewatch the video a few more times! I just dont really understand at which point i should start to measure.
The float height should be measured from the float bowl surface to the top of the floats. Position the floats so the float needle seats, but does not push in the center cylinder. Once you have it apart and check it out you'll see what's going on.
Ok, my center cylinder seems to be really sensitive, doesnt matter how i place my float. As soon as the float needle moves, so does the center cylinder aswell! It's a Keihin FCR 37 i got.. the typical one with Kawis and Zukis
It sounds like your needle valve may be worn. It'd be worth replacing it, they're not too expensive.
hope you're feeling better and kicking some cancer ass today! rode my 05 cr250 today for first time on track, corners, whoops are great susp is awesome. carb bowl leaking so i'll build it tomorrow , everything else is good. get well and get back on your bike and keep that positive attitude!!
you got this bro, keep doing what you do and win!!
always enjoy the videos they are great! Would it be possible to do a video of how to drain you radiator coolant, flush it out, and then replace it?
Thank You! Yeah I'll put that on the list of videos to do. I appreciate you watching man.
Jacob Whitmore
You're my favorite dirt bike channel by far. I don't subscribe much, but i did for you bro.
Thank you so much man! Makes me happy to see people enjoying the videos.
the float hight will alter the level of fuel in your carburettor but only changing the jets will alter the jetting!!!
The amount of fuel getting through to the engine will only really be affected by the float hight being too high and thus, the fuel level too low so that the fuel can't be drawn through the venturi and jets into the engine.
The only real consequence of having the fuel level too high is that the carburettor will overflow and you'll lose fuel when at idle. severely high levels will flood the engine at idle but this still doesn't change your jetting, just your fuel level!
I aquired a 1990 CR 500 in mint condition but it runs rough. It starts right up, but when I go to ride it loads right up and wont clear out in any gear. I bought a carb rebuild kit for it and I am about to go thru it but What do you think?
sounds like a fouled plug
my carb float are too high and cough petrol... it make my engine run rich all throttle.
Nice Video Cam. Can't believe how much younger you look....lol
Well done, nice pace, no useless blather.
Thanks for watching!
Ok I watched and listened to your video again and you said to the top of the floats . Now my question would be is it that way for every carb . Like an industry standard , measurements just very ?
i have worked on everything from weedwackers to industrial diesel and natural gas engines and i never knew you were ever supposed to touch your float level, it makes sense sometimes tho but you would think factory float height should be the only float height, but what i think and the facts can be two different things
TBH I don't even need to watch most of your videos. BUT, I do because your videos are great quality and you're great at teaching how to do the task! Thanks for the videos
Thanks man!
Holy shit, taking the rear shock off, taking the seat off, the handlebars off, and both tires have to come off and then the rubber off the rim just to get to the carb.
Opferman Motors Dirtbiking you don't have to do all of that. It's faster if you remove the subframe all together to take off the carb on every bike, I always do it.
02:40 nope! Most Japanese bike carbs will will use Japanese industrial standard screws that are easily stripped with most standard Phillips screw drivers. You can identify these by a small dot next to the hat cross section of each screw (search for an image). Spending a little time and money acquiring a set of JIS screw drivers will save you alot of time and money acquiring a new carburetor.
I was going to say the same. I also have to admit I messed up few screws before learning about jis standard
Lol I’m in Japan and there’s no such thing as JIS screwdriver. . They just use standard #2 driver with metric threads and length. 😂
Or just change then out for cap screws with Allen heads.
He didn’t say anything about using a Phillips head screwdriver. He just said “your screwdriver”. Yes, we all know about JIS. Except for technie87’ who apparently is an expert on Japanese engineering (because he was in Japan), and therefore claims it doesn’t exist.
Yes, Japan doesn't have their own standard in screw drivers..fucking idiot.
rhinotools.com.au/product/jis-vessel-screwdriver-set/
Once again you have this old man learning. Lol . This video was very informative thank you and merry Christmas.
gezz.. my hated part on servicing bikes. It's really a test of patience than mechanical skills. But it's worth it getting it done right the first try than having to pull it out once more. Nice vid.. detailed enough.
I agree, it's a time consuming and delicate process. Gotta be done though!
If i increase the float height by by bending the tab down, does that mean that I'm leaning out or making richer? Thank you for your videos and your bikes are super clean, wish my YZ250 were as clean.
Ok I'm just a little confused . Do I measure from the middle of the carb to the top of the floats ? Or to the seam in the float . On my 2003 Suzuki rm125 in the service manual it says the number is 8.7mm but doesn't show from where to where . So if you can please help me so I can make sure I'm doing it right . Thank you . And again merry Christmas
Thumbs up brother. You explain things well. I already knew how to do it but if I didn't your video would've been helpful, thorough and easy to understand 👍
Much appreciated John!
@@CameronNiemela I know is an old video, but maybe you can you help me with some advice... I changed all the gaskets inside the carb (keihin PWK36), flotor level is correct, runs fine when open throttle. The idle I cant figure it out, tried multiple pilot jeting from 40&45 (second position for needle) idle stay very high or die, pilot nr. 48 in second needle position is not running well on 1/4 throttle, seems to much gas. Put needle to first position and with pilot nr. 48 have more grunt, more linear power delivery, seems to have better idle but it still drops from high rpm to very low after few seconds. Should I try with pilot jet 50 or smaller? or what to try next? this is killing me :))
Beautiful Honda.... nice job on the bike and thank you for the carb tip, very useful.
Man I need your help for my 94 yz 250 I just got
ill stick with my 87 kx 250 ol reliable.
What is the sign of too low and too high float level? How can I know if it is not correct?
Logan880121 too high the bike will piss out fuel and too low might not give the bike enough fuel when full throttle so it might cut out. Just check what it should be and adjust to spec
Good info. mine is way out of spec. Probably around 3-5mm
Thanks! Yeah it doesn't take much to throw the height off. But it's amazing what proper float height will do.
Thanks for sharing very helpful
Thanks for this, I am learning a lot. But where to check the correct height spec for a bike?
Just go on google and punch in your bike model and ask for your height spec on the manual then you’ll know the level
Man thank you so much for this video.
I appreciate you watching!
The wire that holds the float valve is L shaped, which way round should it sit on the float tab?
Noticed on a buddies bike yesterday that hit bleeder tubes on the back of the carb were blocked off with screws. Does that cause an issue? I’ve never seen it before, he just purchased the bike second hand recently
Are these carburetor rebuild kits pretty universal if you just need to replace things like the float ,needle and seat? I have a 1990 KX125 with a Keihin pwk carburetor
Great channel
Thank you
Amazing video! I just have a quick question So I recently brought it to the shop for a carb jetting and it worked perfectly fine idles, doesn't bog still up to this day. But what concerns me is I see fuel leaking out the overflow tub when the bike is barley tipped over. When the bike is on the triangle that's when fuel starts to drip out. The bike also does this when it's running too but u have to lean it over a tad more to see it dripping. I know this is not normal because I have a race bike and pratice bike and my race bike does not do this. Thanks!
Thank You! That definitely sounds like the float height is off. You will need to increase the float height since too much fuel is being stored in the float bowl.
What's the difference between the red shock coil and a yellow one? My '01 cr250 has a red one like your 125, yet every single other '01 I've seen has a yellow one. Thanks.
All Honda two strokes in that year range come with yellow springs, but there are people like me who paint them red. I'm guessing that's the case with your bike as well. I can't stand the yellow spring.
Thanks for getting back to me quickly. Is the sticker on the back of your shock red as well. The reason I ask at all is that sometimes manufactures will color code their product according to specs and I wondered if Showa did that here.
Do a Yamaha banshee carb build
hey question why do you hold the carburetor upside down at a 45 degree angle doesn't it make more sense to hold it in the orientation the carb would normally sit??? Thanks
Anyone know what i have to change on my 26mm molkt on a lifan 125 to get rid of bogging? I have tried from 100 to 122 main jets (102 is the stock one) and nothing is helping, i have also tried 10 sizes bigger pilot jet, im not sure if it helped, but maybe it did a little. I tried a cloth around the air cleaner that removed the bog but it doesnt work well with it on. So do I have to get bigger or smaller main jets and/or pilot jets? I appreciate if someone could help
My carburetor is running great but every hour or so it fouls the plug
I was told to make my main jet smaller . can I Sutter it close and start drilling with the next smaller bit size that is smaller then my original jet
I’ve been dealing with this issue for about 5 years now. Just been popping in a new plug every time
Everywhere
Waisting time money and fun
My main jet is a AB390
I’m running vforce3 s and a fmf gold fatty . This is the same bike as yours 2007 cr125
With throttle position sensor
I replaced the tps and bought the tps tester to check if it was working correctly, what you think 🤔 cam?
Thanks man this a educational
Thanks for watching dude!
I Hava a NIBBI Racing Performance Carburetor 32MM Motorcycle Carburetor, would you know where the two hoses on the side of the carb leads to or where it should be connected to on my 250cc motorcycle? I know where the standard hoses, like fuel and bowl lines connect. But the hoses on the side have me at a loss.
I bought a non-adjustable plastic one, locked to spec :p
I’m doing a motorcycle mechanic course, I want to be as knowledgeable as you.. are you a certified mechanic And did you go some sort of course for that certificate?
what if I removed the throttle position sensor directly from the carburetor?
Do you tighten the pilot jet screw all the way when re installing it?
Brandon yes but don’t over tighten it will break easily.
What happens if you don’t do this
I've gotten to the point I can remove the carb with the bike fully assembled. I'd say its more for dual sport bikes, but as an extreme example if you start out the morning at the base of a mountain and by the afternoon your 10,000ft in elevation higher its nice to swap the jet without disassembling the entire bike and losing things on the trail.. That being said Hondas are even easier because the bowl on the Hondas have a big nut you can remove and don't even have to pull the carb, UNLESS you have to do the float height at the same time, then you still have to pull it (: Haven't heard of many people needing to re-adjust the float height with the jetting however... but I guess it could happen, depending on what type of float you have and how hard your slamming it on the trails all day.
please tell me why. i have kx 80 1991. and it runs without any throttle pretty good and it work really good in low rpm, but if i twist the throttle and in half rpm it sounds like its running lean and it doesn't rev anymore than half gas and sounds like its running rich??
My carb is pissing fuel out the overflow tube. Float set too high?
I also have a mikuni carb and when I turn the fuel on to start my bike gas starts leaking out of the vent hoses, is this because of the float hieght?
It could be, but the float height would have to be set super high. What's more likely is that the rubber inlet needle in the float bowl is worn, damaged, or out of adjustment so that it's not seating correctly. This is the needle that the float is directly connected to. This valve is the main way that the whole carburetor gets fuel from the gas tank. If this tiny little brass and rubber needle valve is out of whack in any way, it will just stay open and fuel will start overflowing out of the carb and out one of your drain tubes right onto the ground. It could drain your entire gas tank eventually.
what the hell was that giant red and white thing he was stabbing with that yellow gun? thats all i could watch
I really need help adjusting and jetting a 2008 yamaha yz250f carb and what I need to take note of
Thys Greeff buy a 2stroke and use the jetting app on the AppStore for that
I changed to a bigger pilot jet in my Hero Honda Karizma R 2011 carburetor as i was having cold start issues in the morning.....now that the cold start problem is solved....but whenever i put my motorcycle on side stand the engine rpms starts to decline gradually and engine stalls and as soon as i remove it from side stand it is working fine with rpm again at normal range.....may be the bigger pilot jet is giving more fuel to the engine....should i decrease or increase the height of the float bowl pls suggest....😇
I have the same type jet, but i cant find any jets that is the same type, any ideas?
nice 1 cam.
Thx!
now i was cleaning my carb because my bike would bog until like 20 mins after riding it so then i noticed my floats wasnt lining up straight with the carb frame so i bent the float adjustment up but now when i went to go test it alittle more than average gas came out of the carb overflow is that normal? or should i re adjust my floats a little back? the bike did start and run tho
Should a new carb have to be checked for this float height ?? Thanks in advance 👍🏻
yes it should
Snitchy1989 Ok 👌... cool ! ThankYou
Most likely it'll be set correctly, but doesn't hurt to check before installing the carb.
ReVive Moto Parts Thanks man 👍🏻 LOL ... Already put on .. Guess I'm pulling it off !!
does jetting your carb increase your bikes performance
Only if you need to, like if you've fitted a free-er flowing exhaust or air filter or had work done on the head to increase flow rate into the cylinder. You will need to change your jetting if you ride at altitude (3000ft/1000mtrs or higer) and fit a smaller jet due to the thinner air, other than that No!
@@roythearcher thanks man
how do i know how high my float level should be?
2:37 Use the proper tool, on Japanese bikes that is a JIS screw, so use a JIS screwdriver. Never heard of it? youtube it, you'll be amazed.
once u dismantle.were it necessary to renew gasket?
If it's an o-ring, no need to replace if it's in good shape. A gasket however should be replaced.
What standard size this carburetor? 38mm?
Why shouldnt the throttle position sensor be removed from the carb?
Prolly can but would mess the gasket up
do you increase the float height by pushing the tang up or down
You bend the tab down to increase float height.
I have a Mikuni TMX38S carb on my rm 125 I'm pretty sure its stock for the year, at high rpms the bike sputters and doesn't feel like I'm getting 100% of the power could the carb play a factor in this, I've tested for everything else, seals etc and they're all fine?
Murphy Lunjevich Try different clip settings on your needle, or a new profile needle if you already have
which carb do you prefer ? Keihin or Mikuni ?
When you watch videos about carbs and you have a fuel injected bike
Muito bom 👏👏👏
You look like the type of guy that gets a lot of cold sores
Hello.
I have a Nibbi power jet carburetor for my 250cc. It came with hoses that I am not familiar where to lead them or connect to on my bike. Any help would be greatly appreciated. Thanks.
What 250cc? Did you figure those things out? I have a 250 and got a nibbi for it aswell
@@Tahmanakki Honda. I could not adapt the power carb to work with the motor. It would have been sweet if I could. Went with a PZ30 Carburetor from Amazon. Worked perfectly. The exuast end of the Nibbi carb could not be fitted with my motor.
You should of replaced the needle valve
If you dont want to struggle as much with the subframe remove the plastics and the silencer
domino diamond who needs plastics?
domino diamond 😂😂😂😂😂
What are the signs of float height being off?
If the float height is below spec, the bike will leak gas out the overflow very easily when tipped to the side. And too much float height will cause the bike the starve for fuel and will be unresponsive to jetting changes.
Cameron Niemela . when the carb is completely upside down should the floats sit level with the mating surface amd the float needle completely depressed?
Shake your bike side to side. If the engine hesitates, check the float height. My bike would die when taking corners.
Seattle supercross?
Yeahhh I'll be there! What about you?
Y donde van las mangueras????
Nice!
Thanks!
hey, i have a mikuni tmx 38 flatslide carb on my Husqvarna cr 144. but the bike is bogging and sputtering at low rpms, just like if you hold the chocke in. Any ideas what the problem could be? changing the needle position did not work, the fuel/air mixure screw wont even react.
b sk maybe it's the pilot jet
b sk I had a bog on higher Rpms but it was because the power valve needed cleaned out
jr...your srews strip only when using a ANSI style screw driver sold in USA. The screws pitch is JIS...which is different then ANSI. You should ether replace with ANSI screws, allen heads or use the correct screw driver.
removing the subframe and shock just to remove the carburetor? thats a much ya think? good info here though. Another good idea while the carb is off is to check your reeds.
is this carb a TMX 38???
Sería buena ver la traducción en español. ???
Dude you discovered the second thing in a carburetor,
but carburetor have a lot of points to check, unless your an expert leave them alone otherwise bike will never work ok., they are olscholl so even nowadays mechnaics have dificulties in dealing with them.
cool
Thanks!
Use the proper screw driver like a jis screwdriver then it wont strip
Cleaned out carb and changed Needle and the other little jets not the adjustable ones just the ones around the floats now quad is bogging from 3/4 rev to full open throttle. Could this be due to foot height?
what kind of bike is yours?
It's a 2005 Honda CR125
Great video!
Thanks Rafael!
How to tune this carburettor
whats the white thing on the jets for ??
It is to protect the fuel from sloshing around in the float bowl so the bike doesn't cut out on rough terrain.
My bike Honda unicorn 150cc
holly shit im never buying a honda ,il stick to twisting my yz carb, i can work on the yz carb in 10 min done,,honda holly crap
miller300zx I can second that
the one in the video is an aftermarket mikuni carb
What is that bult at the bottom of the float bowl called because i need one for a 2 stroke 250 suzuki 4wheeler can anybody let me know?
It's just the carb drain bolt.
Cameron Niemela can you send me a link or something so i can find it please?
Alexis Garcia i havnt found it sold on its own but search for your size carb rebuild kit, ive gotten them in those to repair bikes i buy from auctions. gl
Intro is exactly same as bay area bugs