Hey guys.. I have a eton Thunder 90. It idles fine then starts revving up on it own. Not fully but enough to try to get the clutch to engage. I've rebuilt and replace the carb.. Same issue. If I lean it to the side it slows the idle to normal. Head gaskets look good no leaks not to familiar with this model other then that it starts and runs great. Any help woul be appericated. Thanks.

 

Spray some carb cleaner around the carb especially around the base. Sounds like a vacuum leak when things warm up

 

Thanks for the reply ..I'll try that it seems odd when I tilt it that it idles down.. Are you familiar with the eton 90 I'm thinking it may be crank seals and when I tilt it the oil is making it seal back up. Does the motor have to come off of the etons to get to the crank seals? I was also going to check the reeds I know that bad reeds you can loose revving I'm not sure if it will do the opposite and cause I high rev as well.

 

ditto on uneven idling