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Air blown out the intake

  #1  
Old 01-12-2019, 01:39 PM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 11
Default Air blown out the intake

Hello,
My atv won't start and has air blow out from intake to carb. I have removed the cilynder head and poured water from both valve sides and there were no leaks, I have lined up the tdc on piston l then put the timing (valve) gear to the notch on the cilynder head. So what could possibly be wrong?
 
  #2  
Old 01-13-2019, 03:32 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,612
Default

Cam timing is fairly "wild" on quads, and being a single there are no other cylinders sucking air in, so they tend to spit a mist out of the bellmouth as they run. You don't notice this until you have a problem and take the airbox off. Look elsewhere for the fault, partly blocked carb, no spark etc.
 
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