Motorcycle and ATV Carburetors 101

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Rocky Mountain ATV MC

Rocky Mountain ATV MC

Күн бұрын

Пікірлер: 175
@iamzergling
@iamzergling 5 жыл бұрын
One thing I love about these videos, is they can explain the entire concepts using normal language and not sounding like he's talking done to us. It's awesome. Thank you guys!
@rmatvmc
@rmatvmc 5 жыл бұрын
Glad you got something out of this video and we appreciate the feedback. Thanks for watching!
@jayvlogs5544
@jayvlogs5544 5 жыл бұрын
@@rmatvmc hi I have a 2002 trx400ex can i put a 36mm cr500 carb on it..will it run??...plz respond
@stvnmoto
@stvnmoto 4 жыл бұрын
@@jayvlogs5544 It might run, but the carburetor is far to big for the accurate fuel/air ratio that the engine needs.
@Bournefort
@Bournefort Жыл бұрын
6:09 Very true. A bad air to fuel ratio from the pilot adjustment screw will cause issues at any throttle. My idle was fine, my mid range was fine, but my engine would bog at full throttle. I leaned out my my pilot screw and fixed the problem.
@samj-wg9ch
@samj-wg9ch 2 жыл бұрын
well done Steve, I've seen many many videos to understand how it works in a carburetor, the logic and the use of each part. Some were good some were less, but none were as complete and clear as your video. Your team prepared it well, and you explained it as well. My mechanic takes care of my ATV and I only hunt, but I had to understand the hows and whys, and this video DID IT . thanks.
@travishall67
@travishall67 5 жыл бұрын
Thanks for taking the time to share this. Very useful information and the presenter Steve did a GREAT job explaining it all very clearly.
@Ajw068
@Ajw068 5 жыл бұрын
Great video....loved how you explained all aspects of the carburetor.
@edwardbarnett6571
@edwardbarnett6571 3 жыл бұрын
Best video on carburetors I have seen and I have looked at a lot.
@Merc399
@Merc399 2 жыл бұрын
This video helped solidify my understanding of the circuit functions. I was struggling with other videos and diagrams and this video helped but it all together into a concise understanding. Thanks man! I'ma check out the site
@topJimmyP1984
@topJimmyP1984 Жыл бұрын
Great instructional video, thx!
@cranedaddy678
@cranedaddy678 3 жыл бұрын
I learned more about carburetors in this 20 min video than I have in my 40 years on this planet.
@rmatvmc
@rmatvmc 3 жыл бұрын
That's what we like to hear!!!!!!!
@ericjones90googlepixel8pro
@ericjones90googlepixel8pro 5 ай бұрын
Dude really good video. I don't see how this thing went viral
@RosalinaPickstone
@RosalinaPickstone Жыл бұрын
Liked your presentation but can you give us a comparison between Round versus Flat slide carbs (like Lectron) and the Yoshimura "jet in needle" carbs?
@rebeccatodd8754
@rebeccatodd8754 4 жыл бұрын
First off awesome video very informative. I replaced the carburetor on my Kawaskai Bayou 220 but I'm not getting any fuel flowing into it. I'm stuck on what to do if someone could please help me troubleshoot that would be great. Thanks
@stvnmoto
@stvnmoto 4 жыл бұрын
You need to check the fuel valve on your fuel tank to see if its clogged. some valves you can rebuild some you cant. but if you pull the fuel supply line off the carburetor and the fuel valve turned on and no fuel flows then that is the issue.
@mojaveadv7135
@mojaveadv7135 5 жыл бұрын
Thanks! Can you do series on 36-38mm Keihin Carbs.
@St.Michael-Ross
@St.Michael-Ross 2 ай бұрын
Big help thank u , TRX350 Honda , carb. Leaking out overflow. 😊
@rmatvmc
@rmatvmc 2 ай бұрын
No problem 👍Glad we could help!
@drewwilliams6898
@drewwilliams6898 3 жыл бұрын
Yeah, honestly grateful for this video. It was to the point, very clear, well explained. You just helped me solve 2 different problems on 2 different a.t.v's and I actually learned a lot. Thanks Steve and Rocky Mountain A.T.V
@ChrisGuthrie
@ChrisGuthrie 4 жыл бұрын
Couple things I've run into recently trying to fix the unfixable 2007 YZ450f lean bog/popping/hard starting..... - 1, make sure valve clearance is within spec. -2, someone had replaced the accelerator pump linkage with some shiny piece, long story short it was not the oem black plastic piece you do the "oring mod" to, so it was too short, accelerator pump did not work. Ordered a new kit, put it on, works fine ever since. Also, wont run without choke, check pilot jet/passage. fuel leak at the inlet, fuel inlet o-rings
@jamesjackson6292
@jamesjackson6292 3 жыл бұрын
Excellent vid, I think you touched on exact problem with the accelerator pump. Klx450r runs good everywhere except from idle if you twist the throttle quickly it dies (caused me to fall and being trapped under the bike for an hour boot went between peg and shifter,scary had to call a friend)anyway is the an adjustable accelerator pump offered for this FCR-MX-40 Keihin? Thanks for the video,I am not near as scared,getting it out of the bike is a pain but I must fix this problem any advice is much appreciated.James
@garonburwell9008
@garonburwell9008 3 жыл бұрын
the accelerator pump is adjustable through the leak jet among other details as well
@1ronhall
@1ronhall 5 жыл бұрын
Thank you for a great review and summarizing the carburetor. Mine is in need of a rebuild, so thanks.
@sammcconkey4909
@sammcconkey4909 3 жыл бұрын
Thanks so much for this informational video
@spirited1puppetmastered917
@spirited1puppetmastered917 3 жыл бұрын
I would have appreciated it if you had stuck to one type of Carburetter per video therefore not causing any confusion
@k.snyder_812
@k.snyder_812 4 жыл бұрын
You should make a video on best carburetor accessories
@rmatvmc
@rmatvmc 4 жыл бұрын
That's a good idea. Thanks for the suggestion!
@orriolbohigas591
@orriolbohigas591 3 жыл бұрын
Amazing video. Thank you very much. I'm learning a lot with you guys!
@davidlbrown8002
@davidlbrown8002 4 жыл бұрын
I really appreciate this well done video. Thank you!
@foxa08
@foxa08 5 жыл бұрын
Great video! Explains carbs very well. Thanks!
@m.r.3780
@m.r.3780 3 жыл бұрын
Thank you for this excellent information. What you have to say is very important to me. Why blend it with music? I need to hear and learn from every word you have to say. I am not board by this great video and don't need to be entertained.
@georgemorgan797
@georgemorgan797 2 жыл бұрын
I have a Honda VTX 1300 ques: Will the extended fuel/air Tusk adjust screw work in this application? Ques: Are there carb kits available for the VTX 1300R that contain the Tusk adjusting tool/part? How do I order? George Tucson
@Cbob222
@Cbob222 4 жыл бұрын
This guy says measure funny. Meayysure. But awsome video, very in depth and informative
@stvnmoto
@stvnmoto 4 жыл бұрын
It's a Utah thing lol
@pantherplatform
@pantherplatform 2 жыл бұрын
What about snowmobiles? Mikuni slide carbs are the best on sleds.
@bradleykerssens
@bradleykerssens 3 ай бұрын
18:27 on the top side of this carburetor, there is a plastic tube where you can put a hose on to. But i couldnt find anything on the internet about it. Could you explain to me where this one is for. I thougt that it is connected to the airfilter box. But what to do with those if there isnt a filterbox anymore? If i close them the motor stops running. But if i open them all up it does nt run properly. Hope you can help me out🙏
@justinraab8062
@justinraab8062 2 жыл бұрын
Great informative video guys. Can’t wait to put this new knowledge to the test in figuring out why my Raptor 350 breaks ups upon acceleration 👍🏻
@mobgma
@mobgma 5 жыл бұрын
great video
@49thstateracing67
@49thstateracing67 3 жыл бұрын
Steve your such a badass ,and you remind me of my good friends keep up the killer instructional vids thanks ,49th State Racing
@thailandmopedadventures611
@thailandmopedadventures611 2 жыл бұрын
Great Job
@nicerickson8688
@nicerickson8688 Жыл бұрын
My husqvarna fc350 revs high when the choke is in, do you think that has to do with the jets?
@berrdeddy2775
@berrdeddy2775 4 жыл бұрын
Liked your video. I have a KTM 450 EXC, with a Keihin FCR-MX carb and the bike won't start with the E-start until it's warmed up a bit and then I usually need to give It just the tiniest bit of throttle. When cold, it starts easily with the kick start, but again, it needs a tiny bit of throttle. Once warm, the bike seems to run correctly and be responsive. I've also had the carb apart a couple of times and can't find anything that looks wrong (everything looks clean, including the pilot jet). I got the Tusk fuel screw and did some adjusting of the fuel mix and idle but it didn't fix my starting issue. It would be great if I could get a couple ideas on what to try next.
@stvnmoto
@stvnmoto 4 жыл бұрын
Check your valve clearance. If your intake valves are tight with no clearance than that is your problem.
@berrdeddy2775
@berrdeddy2775 4 жыл бұрын
stvnmoto, your suggestion was exactly correct. I happened to adjust the valves a couple of weeks ago just hoping it would help and I noticed that one of the intake valves had no clearance. After putting everything back together it started easily with the e-start and no throttle. My subsequent rides were great. Thanks!
@johncreamer1744
@johncreamer1744 4 жыл бұрын
Awesome video! Very informative.
@connersnow298
@connersnow298 3 жыл бұрын
Awesome vid and edits and filming
@electriciantm9142
@electriciantm9142 Жыл бұрын
Is it bad idea to replace cv carb to a slide one for a chopper 450cc? hard to find a cheap cv carb... and what are the cons?
@xtreamcj3547
@xtreamcj3547 Жыл бұрын
You mentioned the pilot jet and pilot jet screw working together but you did talk about the pilot jet at all. Can you do a video about adjusting the pilot jet with rich idle conditions
@Bournefort
@Bournefort Жыл бұрын
If you are running too rich and have already maxed out your adjustment screw, you need to get a smaller pilot jet to reduce fuel flow even more. Vise versa. If you have already backed your adjustemt screw all the way off, and are still running lean, then you need to get a bigger pilot jet to let more fuel in.
@Bournefort
@Bournefort Жыл бұрын
I just rebuilt the carburetor on my atv and it was running super rich. Black spark plug, wouldn't run well after it warmed up, and would bog at full throttle. I had to fully close my pilot adjustment screw. Luckily mine works when fully screwed in so I don't have to replace the pilot jet.
@Greasy__Bear
@Greasy__Bear Жыл бұрын
I recently started working for an old guy i thought he knew what he was doing. It bogs down anywhere above 1/4 throttle he keeps having me drill the pilot jet bigger. Its about double the spec and it now runs well up to 1/3 but is still bad above that. I need to adust the needle up as int the nedle is higher right?
@fifielcoolio
@fifielcoolio 8 ай бұрын
Amazing vid, thank you!
@-Just_Justin-
@-Just_Justin- 4 жыл бұрын
Hello Steve, amazing video and great detail. I have 1 question for you though. Have you heard about rejetting pilot jets to be richer for bikes that operate 7000' and above before? Apparently the idea is that natural loss of vacuum on an engine due to high elevations can cause harder starting conditions. A richer pilot jet to help compensate for the lack of vacuum to help aid in a richer condition and adjusting the main jet accordingly to elevation.
@stvnmoto
@stvnmoto 4 жыл бұрын
You are correct and incorrect. Yes you loose air volume as you get higher in elevation which will both cause a richer condition, but the lose of air volume will effect it. The very reason that the pilot screw/fuel screw/air mixture screw or whatever you want to call it is there for adjustment along with the idle screw. Barometric pressure, and humidity also effect it causing a lean or rich condition. If you were to look at it on a chart, the lower elevation you the changes in jet size are less dramatic in running conditions than it would be at higher elevation because of less air. You can over rich or lean one circuit and try to compensate for the lack of correct adjustment of another circuit to a certain degree. But its not accurate and your engine will never run the best it can without adjusting everything properly.
@garonburwell9008
@garonburwell9008 3 жыл бұрын
you got it backwards. higher elevation is less air. so less fuel at higher elevation. see? for what it's worth i've seen the tendency for some folks to think that at higher altitude you need to add fuel and i can't understand why some people think this.
@Francois_Dupont
@Francois_Dupont 3 жыл бұрын
"cv carburetor is the most common" its the first time i ever see one in my life.
@postmortemspasm
@postmortemspasm 3 жыл бұрын
You need to ride more bikes, son
@Francois_Dupont
@Francois_Dupont 3 жыл бұрын
@@postmortemspasm sorry if an old fart like me cant afford the new fangled technology.
@wilmer2754
@wilmer2754 3 жыл бұрын
Hi; I have a Vulcan 500cc 1994 with twin carbs, I have a problem of overflown petrol,I had changed the needle valves and cleaned afew time,it worked but in a few months came back leaking baddly. I know the seats of the valves must be modified but I do not where,who does this kind of work. Where I live they do not do it. Have you heard about these problems,how did you solved if you did. Many thanks
@devonhoffner6824
@devonhoffner6824 4 жыл бұрын
A lot of info! I'm wondering how to adjust the throttle return spring on 1992 big bear 350? It has been sitting for a few years and the return spring is very tight.
@stvnmoto
@stvnmoto 4 жыл бұрын
It's not the return spring, its the cable being corroded and lack of lubrication. Try a new cable and see if that solves your problem.
@user-gm4zh3wd4l
@user-gm4zh3wd4l 2 жыл бұрын
Wow U spent some time making this vid just came across it thanks heaps subscribed 👍
@GARRETT-FAB
@GARRETT-FAB 4 жыл бұрын
Great info
@rbell38340
@rbell38340 4 жыл бұрын
EXCELLENT VIDEO
@carlhaggard3792
@carlhaggard3792 Жыл бұрын
I have a 98 Kawasaki bayou 400 it’s having carburetor issues it won’t idle it’s coughing and popping and gas is pouring out the overflow tube but it’s a weird carburetor. It has a primer pump and it has vacuum up to it. I’m not a mechanic do you have any suggestions, what the problem may be thank you
@fun-im6gu
@fun-im6gu Жыл бұрын
Trying to get a dirtbike. They said grass got in to the carburetior from the air breather. Will it still run good?
@rmatvmc
@rmatvmc Жыл бұрын
If anything is in the carburetor it will most likely not run very well. You will want to do a thorough cleaning of the carburetor.
@fun-im6gu
@fun-im6gu Жыл бұрын
@@rmatvmc will that require taking the whole thing apart and putting it back together?
@johnwells2616
@johnwells2616 4 жыл бұрын
Really excellent video!
@darrenarnold7361
@darrenarnold7361 5 жыл бұрын
Love the vids people 👍🏻
@chrishassertt5957
@chrishassertt5957 3 жыл бұрын
I have two different atvs both only run with the full choke on , and run very fast , remove choke and the engine dies , I have replaced carbs and still same issues any ideas thanks
@fromthebottomup3106
@fromthebottomup3106 2 жыл бұрын
I have a question, why does my dirt bike keep fouling plugs? When I pull the plug, it looks all black and its fuel soaked after just a few minutes of riding.
@billb295
@billb295 3 жыл бұрын
Great vid as always.
@bbundridge
@bbundridge 5 жыл бұрын
Fantastic video!!
@rmatvmc
@rmatvmc 5 жыл бұрын
Thanks for the positive feedback!
@brianvanpaepeghem9484
@brianvanpaepeghem9484 4 жыл бұрын
Would popping thru the carburetor be considered a lean condition? 1990 kawasaki Bayou klf300c with Aftermarket Chinese carb.
@bertmusic9582
@bertmusic9582 4 жыл бұрын
Just had same condition on 200 Yamaha. Mine would not get past idle with throttle unless on choke. (Completely clear pilot circuit) my fix was going 1 size up on pilot jet. Make sure your new Chinese carb has the same jets. It may have smaller as they are usually geared towards 125cc or less machines. Good luck let us know your fix!🤞👍
@stvnmoto
@stvnmoto 4 жыл бұрын
Don't buy Chinese carbs! they are junk. you are better off rebuilding the OEM carb.
@DanielMendezSosa
@DanielMendezSosa 4 жыл бұрын
Awrsome video! I got a kx250f 2009 and im having a hard time tonstart it when its hot. Any tip to solve that? Is driving me crazy.
@stvnmoto
@stvnmoto 4 жыл бұрын
Check the Hot Start lever adjustment. But for the most part your bike needs to be tuned to you elevation and riding conditions by a good mechanic. The other issue that might be going on is your intake valve clearance adjustment is tight causing the intake valves to not seal correctly causing compression to push back into the carburetor that will not allow the fuel and air to be sucking into the combustion chamber for internal combustion to happen.
@williamballard7822
@williamballard7822 2 жыл бұрын
I have a 150cc 2018 BENNCHE 4 wheeler that setup for like 6 months and I replaced the battery and also had to replace the fuel filter because it was leaking but anyways my 4 wheeler is hard to start and when it does start it bogs down and dies on acceleration and then I noticed there was gas in my oil so is that my float valve
@Deepwater_hydro
@Deepwater_hydro 2 жыл бұрын
Would really love your opinion brother!!! I just had to redo a build I bought off someone who did it wrong by a long shot not dissing the guy but it was bad anyway I had to take off my carb an I left it upside down for about a month an half while I fixed an waited on parts to come in now when I hooked it all back together my carb is leaking gas, do you know what’s the problem brother lmk please
@Marc_Wolfe
@Marc_Wolfe Жыл бұрын
"You'll see this on generators..." and jet skis. Mikuni Super BN is great.
@herbertpenny9622
@herbertpenny9622 3 жыл бұрын
I am looking for a two-stroke carburetor do you guys sell them for a Polaris 250
@herbertpenny9622
@herbertpenny9622 3 жыл бұрын
Do you guys sell two-stroke carburetors for quads I have a 250 Polaris looking for a carburetor for it
@humbertoflores6044
@humbertoflores6044 3 жыл бұрын
This is awesome. Learned a lot 👌🏽
@martinheuser4781
@martinheuser4781 3 ай бұрын
I have a 4 stroke atv 2000 Kodiak with an aftermarket carburetor when I go full throttle the the engine stutters. Will that be the wrong jet size? Thank you
@rmatvmc
@rmatvmc 3 ай бұрын
Could be. Sounds like the main jet might be too big. You can verify by trying to rev with the choke on, stays the same or worse=smaller main, better=bigger main. Then with choke off and air box lid off, rev it again, better=smaller main, worse=bigger main. This is assuming you've checked all the basics (fresh fuel, clean air filter etc.). For reference, our QA Parts carbs that fit your ATV come with a 120 main and a 45 pilot. If you can't get the carb you have ironed out, I'd try the QA Parts carb and be done with it. -Charles
@martinheuser4781
@martinheuser4781 3 ай бұрын
@@rmatvmc thank you I will try this
@rmatvmc
@rmatvmc 3 ай бұрын
Good luck, let us know how it goes!
@Jimbobdro
@Jimbobdro 5 жыл бұрын
Thanks for the info vary accurate 👌
@kelixrosa9906
@kelixrosa9906 4 жыл бұрын
If there called “deadlines” where would they lead ? Or where would I put them
@thefarmerism
@thefarmerism 4 жыл бұрын
What is the function of the air cutoff valve on a CV carb ?
@montanakid6134
@montanakid6134 4 жыл бұрын
I think nobody knows, because i never see an answer to this question.
@orriolbohigas591
@orriolbohigas591 3 жыл бұрын
as far as I know, it is used when you start the bike. at that point you need only fuel to get through and so you "close" the air stream. after the engine has started, you let again the air mixed with the fuel. I hope I'm getting that right...:)
@wluke86
@wluke86 2 жыл бұрын
While I appreciate this video I wish you would do a video on each carburettor. I just want to focus on the one that applies to my rm250 dirt bike. The specific parts of the carburettor that would be on my bike
@johnharris6436
@johnharris6436 2 жыл бұрын
I got a question, every time I type in this engine number, SC39E 2101372 I dont get no results. Could you be able to tell me the size of the motor, its a honda valkyrie, but it is not the flat 6 motor, please and thank you.
@adams13f
@adams13f 9 ай бұрын
What about fuel from overflow?
@elvatotoro
@elvatotoro 4 жыл бұрын
Could you help me find the vacuumed line diagram or at least help me figure it out thanks
@malcolmlittle13
@malcolmlittle13 4 жыл бұрын
If the hose where my air filter hooks up isn't connected to the carburetor would it make my four-wheeler lose some. Horse power.
@codywhite7857
@codywhite7857 5 жыл бұрын
Thank you for explaining all this. Majorly helped! I did have a question. What is the electrical wires that go into my carburetor? 2000 Kawasaki prairie 300 4X4
@stvnmoto
@stvnmoto 4 жыл бұрын
They are either for a TPS sensor or Electric choke.
@jonobester5817
@jonobester5817 Жыл бұрын
Somebody please help me. I had to change the carb on a 2019 Chinese Apollo 250 with a nearly identical unit. It idles fine, but it backfires and cuts out when accelerating. The plug shows that it's running lean. I'm thinking of putting a better carb, Mikuni, in there but it's so hard to get in and out I want to make sure it's properly jetted. I'm at 4500' Will the Mikuni also need to have a bigger main jet and a raised needle?
@rmatvmc
@rmatvmc Жыл бұрын
You will most likely need to rejet any carburetor for your specific riding conditions and elevation.
@ARHeroHondaYamaha
@ARHeroHondaYamaha 2 жыл бұрын
Nice video
@CF-BRADY
@CF-BRADY 2 жыл бұрын
Was wondering if you can help me with my carburetor problem. Have a 98 yamaha big bear 350 4x4. Someone totally demolished the carb. All jets, pilot screws were cross threaded and ruined the carb. I got a new one, cleaned it from top to bottom and the only way it will idle is with the mixture screw all the way out to where it's almost falling out. I can get it to Rev up only if I slowly feather the throttle. If I punch it, it immediately boggs and dies. Sometimes it's fine on half choke. I've put smaller and larger main jets and the only thing that changes is full and half choke work properly. Still have to have the mixture screw all the way out and it boggs on quick throttle. I'm at wits end trying to figure this out. Ove cleaned this carb probably 10-15 times. Can anyone help? Thank you
@buddywhitten6441
@buddywhitten6441 23 күн бұрын
Where to buy a carburetor for a 2002 Honda rancher a t v 350
@rmatvmc
@rmatvmc 23 күн бұрын
Check out the QA Parts Carburetor: www.rockymountainatvmc.com/parts/qa-parts-carburetor-p?v=1925
@curtismuma1931
@curtismuma1931 2 жыл бұрын
Do you have a kit. For 2006 suzuki eiger 400 ?
@rmatvmc
@rmatvmc 2 жыл бұрын
We have carburetor repair kits for your ATV that you can check out here: www.rockymountainatvmc.com/parts/atv-fuel-and-air-intake-systems?v=2006-suzuki-eiger-400-4x4
@joparsons20
@joparsons20 3 жыл бұрын
recently i replaced the old carburator on my 89 big bear 350 with a ruijie one that is supposed to be for that year among others, it was much harder to start as soon as it was installed and now that we have some snow down and needed to plow the driveway the bike started moved 15-20 feet, died when we went to shift to reverse and now we cant get it to start at all
@garonburwell9008
@garonburwell9008 3 жыл бұрын
well if the original rebuild-able carburetor is gone maybe another chinese copy will be better a 2nd time
@durtymobile
@durtymobile 4 жыл бұрын
Thanks.
@julietquebec7553
@julietquebec7553 4 жыл бұрын
Hi Steve. I'm your new subscriber from KSA. I got small bike the Honda TMX 155. My plug reading was fine so far having a light tan color which means i got a desired mixture. My issue is that, i can't start my bike with a single kick after overnight parking. It takes 3 - 5 kicks to start w/o choke. And sometimes, takes more kicks if I choked it. Around 8 - 10 kicks if parked over a week. Some owner's and mechanics of this bike said that it is normal for several kicks but i'm not convinced. The average morning temperature in my place was 30 "C. Can you give me some hints to check as I want a single kick every cold start?
@stvnmoto
@stvnmoto 4 жыл бұрын
Hi Jeaven. It can be normal to kick it a bunch of times, especially if its cold. If it were mine I would adjust the low speed fuel screw and turn it out 1/4-1/2 turn to richen up that circuit. There might be a tamper proof plug installed in the way of the screw that may need to be drilled out so you can adjust it, but that's the solution to your issue.
@WestHaddnin
@WestHaddnin 2 жыл бұрын
Thanks bro
@northern.adventures
@northern.adventures 4 жыл бұрын
If I uncork my ttr125le 2019 pull out my air vent and drill two one inch holes do I have to replace pilot from stock 15 to 17.5 pilot. Still stock pipe untouched.
@stvnmoto
@stvnmoto 4 жыл бұрын
I'm not sure you can call that uncorked. If you are wanting more air flow you can do that and yes you most likely need to go a bigger size in pilot jet. First I would adjust for elevation in your jetting, that might make all the difference in running conditions that you are originally seeking for.
@GB-hk9ou
@GB-hk9ou 4 жыл бұрын
Which way do I bend the float needle to shut of more fuel. I have a Honda rancher that I think is getting too much in the bowl. Exhaust smells like fuel and crankcase getting fuel
@rmatvmc
@rmatvmc 4 жыл бұрын
You'll want to bend the tang up towards the needle, which will in turn allow your float level to be set lower. Unfortunately, we don't have a video on setting float level but there are some great videos on KZbin showing the process.
@GB-hk9ou
@GB-hk9ou 4 жыл бұрын
Rocky Mountain ATV MC thank you very much. Out of adjustment will explain what I meant ones correct?
@michaellarcom
@michaellarcom 3 жыл бұрын
As I was looking at the schematic for the 2001 Honda 400EX carburetor I see a jet that nobody speaks about. Everybody talks about the choke the float bowl the pilot Jets the main Jets the needle and then settings but nobody speaks of number 38 in the schematic for the 400EX I'm pretty sure it's the same carb as the 300EX maybe the 450 number 38 in the schematic JET, SLOW AIR (#110) what's that about?
@mantasjaskevicius1385
@mantasjaskevicius1385 3 жыл бұрын
thanks
@juniorward9052
@juniorward9052 4 жыл бұрын
I just put a new carburetor on my warrior 350 it’s running way to high n will not stop I adjusted everything I can what can be the problem??? Please help
@stvnmoto
@stvnmoto 4 жыл бұрын
Check throttle cable free play and adjust the idle screw down.
@williamlee8053
@williamlee8053 3 жыл бұрын
I have the issue on my coolster 100cc. Idles fine usually soon as I give it alot of throttle it dies down
@Kyle_gallegher
@Kyle_gallegher 3 жыл бұрын
It must be lean move the clip on the needle
@Kyle_gallegher
@Kyle_gallegher 3 жыл бұрын
Downward is more rich on clip position
@smokycreekboyz8765
@smokycreekboyz8765 4 жыл бұрын
What size Carburetor does a 1990 Suzuki LT250s QuadSport is ? I had it messured and it is 32mm on the outside & 23mm on the inside............
@rmatvmc
@rmatvmc 4 жыл бұрын
The stock carburetor on a 1990 Suzuki LT250S should be a Mikuni 34mm.
@smokycreekboyz8765
@smokycreekboyz8765 4 жыл бұрын
@@rmatvmc We had it messured they said it was 32mm it is a round slide
@randallbeasley7322
@randallbeasley7322 3 жыл бұрын
What should the idle speed be on a hot Honda 125 engine?
@rmatvmc
@rmatvmc 3 жыл бұрын
It will depend on your exact engine but the idle speed will generally be around 1,100 to 1,500 RPM.
@randallbeasley7322
@randallbeasley7322 3 жыл бұрын
@@rmatvmc This is a bike with only 2000 miles. The idle was 1000 rpm. The headlight would blink at 1000 and would not start electrically. The battery would go dead so i turned it up to 1300 so the headlight stays bright. I think the problem is fixed but if in happens again i will replace the battery. Thanks
@lindakirkby6148
@lindakirkby6148 4 жыл бұрын
How to fix back firing through my 1990 Harley Davidson carb do I increase or decrease my timing
@rmatvmc
@rmatvmc 4 жыл бұрын
Backfiring can have a few causes but if you've isolated it to timing you can try advancing it and see if that helps. Also check your fuel pump and filter are both working correctly.
@stvnmoto
@stvnmoto 4 жыл бұрын
Its not timing, its carbonation being incorrect. or you have a exhaust gasket leak.
@duke1259
@duke1259 4 жыл бұрын
What is the this in the thumbnail? I have it on my carb as well as an electric enricher. It has 4 wires connected to it
@rmatvmc
@rmatvmc 4 жыл бұрын
I believe you are referring to the TPS (throttle position sensor).
@duke1259
@duke1259 4 жыл бұрын
@@rmatvmc yes it is on the opposite side of the throttle thank you! I have trouble getting the right ratio on my scooter.. its 4stroke and have only one mixture screw, how do i know if its working properly?
@bismarckramirez8060
@bismarckramirez8060 4 жыл бұрын
I’m having a problem with a raptor 2001 660r one of my customers bring me a carburetor which after install it’s leaking fuel on the air filter side of the carb are two holes looks like little brass bushings only one of them in one of the carbs is leaking somebody here have an idea what are those holes for or how to fix the problem?
@stvnmoto
@stvnmoto 4 жыл бұрын
Check the float valve and O-ring on the float valve seat. Most likely the cause.
@UhYeahWhateverDude
@UhYeahWhateverDude 5 жыл бұрын
Word.
@Damo530D
@Damo530D 2 жыл бұрын
Awesome, I didn't know backfiring was a lean engine, I'm Due to fit a 30mm carb to my Atv
@steveoh625
@steveoh625 4 жыл бұрын
Ty ty ty!
@dresway187
@dresway187 Жыл бұрын
I have yet to find a video where someone simplifies where the damn fuel line input is and the outlet 😣 wtf can someone help? I’ve got 2006 Yamaha Kodiak 400
@Dosalt
@Dosalt 4 жыл бұрын
20:40 I think he switched up lean and rich points
@magicone9327
@magicone9327 4 жыл бұрын
Dosalt please explain your point
@climbpa9565
@climbpa9565 5 жыл бұрын
I spot a Lectron carb!
@rmatvmc
@rmatvmc 5 жыл бұрын
Had to show off that clear float bowl ;) Good eye. Thanks for watching!
@climbpa9565
@climbpa9565 5 жыл бұрын
Should have explained how that bad boy works.
@stvnmoto
@stvnmoto 4 жыл бұрын
I would have but we were trying to keep to the basics of carburetor function.
@WRAP_itude
@WRAP_itude 4 жыл бұрын
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