How to Rejet Honda CRF150 - Jetting, Air filter, Exhaust Baffle

[@russellb5643]

I bought a 2004 CRF 150F. It ran but not great. Hard to start and would not idle. Followed your suggestions and it runs like a new bike now. Amazing. Thank you.

[@MrPHATSPEED]

Thanks for the video. I did the power mod to my 2004 Honda CRF150F. My exhaust was already uncorked. I did a 42 pilot jet, and a 110 main jet. Uncorked the air box and added a no toil pre-oiled air filter. Bike starts so easy and runs so much better. I also will be installing a pro circuit t4 exhaust system next week.

[@randycombs112]

Older video, but best I've seen on doing things for this bike. Thanks.

[@chickenlittle805]

Thank you for the video. Showed me where my problem was in reinstalling the needle below the clip. Thanks again, great video.

[@TN_HondaDad]

Great video - wow so you can't adjust the air screw w/o a special tool? Good to know as looking to buy a CRF150 soon and mostly likely will rejet to "wake" it up some. Again, thanks for taking the time to make a nice, clear and easy to follow video.

[@leeisenberg]

I always wondered what the heck people were talking about w/ the snorkel. Mine was already removed, but I did put a piece of scrap screen over the top to help keep "big" stuff out.

[@ratherberippin8861]

Thank you for the very good, clear, informative video

[@BHMoto]

Thanks for the amazing video, about to do it to my bike, thanks a lot can’t wait to have the bigger jets in

[@snips4805]

Ayoo watch ur vids

[@BHMoto]

@@snips4805 haha thanks man

[@aprilbaldwin5152]

@@snips4805 yeah BH-moto has the best crf150 vids

[@MrBgman25]

could you possibly provide links for all these mods?

[@ichibangrom9735]

Great video. Complete and informative. Thanks

[@benhains368]

Does anybody know the right size jets so that I can get the maximum amount of power that I can get from the jets I have a Crf150f 2003 model

[@1988howie]

-99103-KPT-0420-Slow jet (42 being the size, stock is 40) -99113-GHB-1150-Main jet (115 being the size, stock is 98 )

[@lookingforhope5455]

well done sir. thank you for the vid.

[@toddreimann7587]

I have a 2006honda crf230f is it possible to put rear disk brakes instead of brum brakes

[@p-51mustang51]

Hey! I have a 2015 Honda Crf230f and I checked the spark plug and it was VERY white at the tip telling me it is way to lean. I took apart the carb and I have a size 110 main jet and a size 42 pilot jet. Which jets should I buy to get the engine running a proper air/fuel mixture? Thanks!

[@crfgangs2446]

Which is the best main jet or which one is you put in ?

[@patrickcronin3264]

Awesome breakdown guy. Thanks. Would you suggest tuning up the carb and jets if i installed a new exhaust system on my 150f? Description says it’ll give the bike anywhere from 2-4 more hp. Does that translate into a carb and jet adjustment?

[@patrickcronin3264]

Yes

[@mattzep8733]

I removed the baffle but I’m not removing the air snorkel. I am rejetting it putting a 42 slow jet and a 110 main. Does anyone think the 110 will be to rich. Or should I run a 108 main

[@nickcuneo9900]

I went by your video, good video by the way. It idles so much better but does the same thing your did when you Rev it. like it wants to die or not enough fuel to much air. did you ever adjust your fuel screw? and did it fix the issue?

[@islacandlesaustralia2519]

Hi I know I am very late watching this video I have a 2013 crf150f and there’s nothing wrong with it it runs perfectly fine I just want a bit more power do you have any suggestions on what to do?

[@michaelpratt6952]

I'm in the same boat with my 2011. Bike runs great. I just want to wake it up a bit.

[@patrickcronin3264]

New exhaust system then a re jet. Some people get a better carb as well. Adds 2-5 hp

[@brianrichard1768]

What did you use on that air filter? Regular oil? You need to use bel-ray or PJ1 or a filter specific oil if you want that bike to last. I did the same mod. 115 main 42 pilot and adj needle. I have the same bog but it only happens when you whack full throttle from idle and when would a rider ever need to do that. If your doing a motocross start the revs are already high so basically you will never notice it. I also did the shims in the forks, it helps a little. If your a taller rider, risers work great. I have the same year and have a full review on my channel.

[@Duckhunterbow]

Brian Richard I used air filter oil

[@BHMoto]

U can use motor oil too though

[@brianrichard1768]

@@BHMoto not if you know better

[@just3goons288]

I Have a 04' crf150f and just re-jetted the carb with a 42 and a 110. I would go with something bigger but that's all I got in kit. I cleaned my filter and took snore out. Also has baffle removed but still had chrome tip. It wants to bog out when I go to start it and won't take gas until a lil bit of idling. Would it be the screw you was talking about? It also wants to bog out while riding but has more power.

[@just3goons288]

Snorkel*^

[@codyhafer319]

Can u just take the bafell out a now do any thing to the carb or any thing

[@tomwhicker7951]

Hey would you still use the same jets 112 & 42 even if you didnt remove the baffle? I wanna do the airbox mod but not remove the baffle because we get pretty bad fines where I ride

[@Duckhunterbow]

Tom Whicker yeah, it should be fine

[@tomwhicker7951]

sweet thank you

[@logancobb683]

How much power does this add I'm wanting to do it to my 230

[@isaacflores9106]

What the tool called for the fuel screw?

[@Xatos1337]

Great video.

[@seller559]

Excellent video

[@t-fent805]

Does this work on 2015?

[@johnnyway8675]

If you had the correct tool for the air fuel screw at 10:43 , would you tighten it or loosen it?

[@TN_HondaDad]

Tightening it in, leans it out, backing it out riches in. ~1.5 turns out after it's been seated is typically the "default" where you want to start then play with it to find the best position. There are after market fuel screws that you can buy that you can adjust on the fly for under $20 - so worth it to be able to adjust the carb "on the go" due to temp's/eleveation changes, etc.

[@doodlebob069]

14:09 the hose that is right above the little screw on the choke. Where does that run up to exactly?

[@TreDayImages]

Will this work for a cheap eBay carb?

[@Pyrite-nn5iz]

What is the stock jet size

[@leeisenberg]

Good video man, you have good attention to detail, thanks for sharing. How many ponies improvement do you think it is? I heard the stock motor is supposed to just be 15HP. Take care from Tn.

[@luisaguilar7922]

Hey, How much does the fuel consumption is increased rejetting this bike?

[@rhinojzs5673]

Not much mine can run a solid 3-7 hours depending on how hard I ride

[@Gear1993Head]

emulsion tube. might be spelled wrong but that's what it's called

[@LtCatfish]

Does it hurt your bike when you take out the baffle

[@will3362]

Lt Catfish I am 99% sure that it does not

[@brazoon1]

Taking the baffle out without re-jetting it could cause it to run lean (and therefore hot) , especially if you open the airbox as well. If you properly re-jet you won't have a problem.

[@jakecarlile2294]

Its like shaving a dog you can do it without hurting it. But some people frown upon it

[@tfoxfamtfoxrules4875]

My crf 150f when I take the restrictor plate out I loose tons of power and my bike runs like shit, does anyone know why?

[@jackfreund5842]

Did you ever use the #110?

[@raywalsh5822]

your better off putting a bigger carb on it.i know u can get a 32mm carb for it.It would increase power

[@jackgodfrey8008]

hey man I've got a 2012 crf230f with twin air air filter and a pro circuit system. got a jet kit for it and I've got a 132 main and a full power needle kit. have yet to put it unjust wondering will it still work as good or not?

[@Duckhunterbow]

Not sure since they're different bikes. I would guess the 230 takes bigger ones like what you said you had.

[@davidmccarron3516]

230s are alot like the 150f

[@jordanwhitford2208]

How'd you start the bike with the gas off

[@Chase97485]

Jordan Whitford there prob was gas in the bowl of the carboratior

[@chandler__21]

I have an 03 150f and it doesn't have the disc around the main jet

[@Duckhunterbow]

Mr. Moto I think they changed the carb in 2006 or 2007 so they will be different.

[@chandler__21]

ok thanks

[@SenorDennis]

Did you say you upgraded to a 112 main?

[@Duckhunterbow]

yeah, i used the 112 main and that's still what I have in there.

[@SenorDennis]

Thanks, I just picked up a 110 5 minutes ago hopefully it'll work well. 98 to 110-115 is a huge difference! Can't wait to try it out thanks for the vid

[@leeisenberg]

Why take the baffle out?

[@LtCatfish]

lee isenberg why watch this vid if you don’t even know what that does

[@nchondakid]

What did you use to take the baffle out?

[@Duckhunterbow]

you just use a torx bit to take the screw out then you can use a flat head screwdriver to carefully pry between the baffle and the pipe to loosen it up. After that you can just start the bike and rev it a bit to get the baffle to slip out

[@elijahwakelin7797]

I did this but when I started my bike up and sounded like it was about to blow

[@Aminole]

MotoMelonz150f you may have turned your idle up to high by accudent

[@elijahwakelin7797]

Pea Pea it's fixed now we just put the grotto in wrong and now it runs better then ever!

[@justinkairo4988]

the what?

[@motocrosspk]

My bad