Xr150-smoke from filter

[sarg99]

hey guys

i got a new pitpro xr150. Try to start it for my second ride and had trouble getting it going. Then after trying to kick it over it made an unusual noise then smoke started coming from the air filter. anyone had this before or know what it was.?

I eventually got it going and went for a ride and it seemed ok. Still a bitch to re-start after i stalled it a few times putting around in some really rocky tracks.

 

[Dabomb]

the white smoke will be premature ignition as the spark plug fires while the intake valve is still open and comes back out your intake.

happend to me wen i put my race cdi on gave it some quick throttle down low, i thought the cdi could be advancing the timing to far. dunno.