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Fuel in the oil
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Posted by: 450kid17

I have a stock 04 450r. My problem is that the oil breather from the motor is pouring oil and gas mixed into the air box. What can be causing this. Any help would be greatly appriciated.

Posted by: GOTFEAR

yea i think your carb is leaking gas into the cylinder and thin leaks past your rings when parked not runing are you cuting your gas off if so pull your gas line off to see if its off complety if so you need to flush your float neadle out might have a litle trash or set the float leavel

Posted by: speedfreaksguy

Sounds like blowby. You probably need to rebuild you top end. Unburnt fuel is getting past your rings and mixxing with the oil.

Posted by: 450kid17

How do i adjust the float back to level?

Posted by: TRX450R_Racer

The needle and seat are stuck open. The engine is getting fuel in it and building up too much pressure and blowing it out of the vent. You need to remove the carb, take it a part and clean it.

Posted by: MX450

quote:
Originally posted by 450kid17
I have a stock 04 450r. My problem is that the oil breather from the motor is pouring oil and gas mixed into the air box. What can be causing this. Any help would be greatly appriciated.

Hey did you ever figure this out.. mine is doing the same thing?