Honda Dirt Bikes Forum

Well i just went and tried adjusting it and had no luck, i swear no matter what i do the stupid thing runs to rich or to lean i can never get an in between. I have an idea that i may need a 350 main instead of a 360 because i dont care what any one says the main jet does matter for start up

This is how i know it matters....when i had the 340 main in there it was to lean and wouldnt start at all, now that the 360 is in it its to rich and oil fouls the spark plug everytime within a minute of starting it.

So i have no idea what to do i am about to the point where im just going to drop the money and take it to a damn shop and let them mess with it, but the thing is i really dont have that money to drop. Hell for all i know it has nothing to do with the fuel system i dono what it could be tho.

Could it be the right crankcase seal is shot and its sucking in transmision oil? That is the only other thing i could think that it could be.  

Your main jet does not efect your starting as Skip said.  

And reverse what you did and turn out 1 3/4. and tell us what happened.  

William - ya need to take a deep breath and let's deal with this one circuit at a time, starting with the pilot.  If you are on the 35 pilot, and choke to start, and 2.5 turns out on the screw, and it still runs rich, them we need to go to the 32.5 pilot and try again.  When we get the pilot right, we can move to the needle and then the main.  
Since when is Dirt blue??!!!

Sorry guys i just get frustrated when i cant ride that is what relieves my stress and when i cant its just not good. I really do appreciate all the help i am getting from you guys tho and cant thank you enough.

Ok i will get the smaller size pilot jet but i saw you said "if you are on the 35 and choke to start" Well i do have the 35 in it right now. But if i choke it to try to start it it wont start at all. If i dont choke it, it does start it takes a while to get started but then when it does it runs bad when you throttle it it dies unless you really really really ease into it even then it doesnt rev like it used to it, now kinda cuts in and out and sounds really bad.  

Yep - everything you are telling me says 'rich pilot'.  If the pike won't start cold with the choke, but will start cold without it, that means your pilot is rich.  If your bike won't start cold with or without the choke, and everything else is working, then that's a lean pilot.  Yours is definitely sounding rich - so, next stop - 32.5 pilot  We'll get your therapy bike better - not to worry!  
Since when is Dirt blue??!!!

Hey everyone... just bought a used '95 CR125 and I love it! However the guy I bought it from had it sitting in his garage a few years. So I tore down some plastic and cleaned, put all new fluids in, air filter and all that. It runs from what I can tell pretty good, it's got a high end from hell! But damn, you know I dont race and only ride trails and such, well it does seem to bog quite a bit and cuts out on hills unless I have it torqued up. And oh... sometimes the fricken thing will accelerate like its going to blow when I'm stopped. I heard its a vacuum thing. Any advice on what I should fix/ check/replace since it sat so long and also about the accelerating thing... any advice would be helpfull!  

Ok well before i put a new pilot in it i tried putting a new spark plug in it and that seemed to help it alot!!! It ran pretty dang good for about 30 minutes or so and then all the sudden it just started to run like crap no matter what gear i shifted into or was in it had no power what so ever and sounded not normal. I did take out the plug and look at it and it did have a bit of oil on it and possibly could have been fouled but it dint look like the other plugs that i have fouled so maybe this one is just fouled to a lesser degree.

I do think i am making tons of progress and it seems to be getting better each time i do something to it but its still not where it needs to be. So whats the next step in making it better?  

New pilot  
Since when is Dirt blue??!!!

you might not be riding hard enough. that bike needs to stay high in revs. if its not you will foul spark plugs. when it starts running like crap find a field and do a hole shot through it make you go through every gear and it runs good.

with the wrong pilot and not riding the bike hard enough you will get the problems you are having now.  
1998 cr125
2002 cr80

O trust me i was riding it hard i was riding it down a dirt road balls to the wall!! So i am thinking i need the next size smaller pilot jet and that should cure my problem am i correct?

Also once again guys thanks for all your help i really appreciate it!!!  

Make sure and check your reeds. All the jetting in world won't help if the reeds are bad. Check the corners and make sure they are tight.

Also follow the direction of bhorrigan. They are on the right track.  

well i think what you should do is check your reeds, spark, and compression.

stock and pro circuit usully have the jetting right on. so i think you should change everyting back to what pro circuit has then lean your pilot, main and i would say needle but that would put you at the top so you would have to get a new one.

if it was me i would put a 35 pilot, 350 main, clip on second, then try it and see if i can get it to run right by messing with the air screw. if it still doesnt work then get that new needle.

skip is very good with carb's and he said 360 but you said it doesn't work with that, that is why i said 350, but he is probably right.

you could save yourself the trouble and take it to a shop. the dealers shop's mechanics are usually bad at jetting so i would find a motorcycle mechanic, you can probably get them to do it cheaper too.  
1998 cr125
2002 cr80

I have an idea!  Take a pic of the plug and post it for us.

Also - just so I can catch up - what jets are in there now?  This has gone back and forth a few times, so I just need to confirm it.  
Since when is Dirt blue??!!!

Have you adjusted your air screw yet?