Still reving high after being warmed up.

[04Monster]

After driving it for a while and come to a stop/idle it will rev up few seconds later. And will stay reved up a bit.

But once i put it in first and let out the clutch it will go back to normal.

What could be causing this? It runs fine alot of power.

 

[Tim Lutz]

Did you try turnning your air screw in a quarter turn. Could also be a low float level.

 

[yb200]

sounds like a lean condition

 

[meangreen]

Whats your jetting like ? And make sure that you vent line out of your gas cap is not plugged,also make sure that the fuel outlet is not slightly clogged.

 

[04Monster]

Im not sure, i got the machine like this. So i haven't taken anything apart. No air hoses are clogged i checked.

But if it was the air/fuel screw wouldnt it not run the best and have all the power it does?

Also im running 50:1 with 91 octane gas.

 

[yb200]

turn ur air screw in all the way and back it out 1.5 turns

 

[stephen12091985]

and you should mix 32:1

 

[yamablast3r]

you should do a leak down test to make sure the cases aren't leaking

 

[yb200]

and you should mix 32:1

i agree or at least 40-1 with a good oil

 

[04Monster]

I was told 50:1

Im using Shell Advance synthetic 2 Stroke oil.

 

[blasterdude]

Go with 32:1 That is what i run and win it's running

 

[jahrastapark]

i was recently having this same problem. it idles a little high, and if you just let the clutch out itll drop, but after a few seconds itll rev up a little bit and hold the idle. /reset your air/fuel. start with that. idk. idle screw maybe? i have mine jetted with a 350 main, so its definitely NOT lean. we have had a change in weather. i thought maybe that would effect it some, but idk. im gonna try a 330 instead of a 350. i hope your problem gets worked out, and lemme know what you tried.