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Discussion Starter · #1 ·
My Yfz will backfire right after I shut the motor off. Does that indicate a jetting problem? I have the baffle out, and I have installed the red needle from the JD kit. 4th clip position, with a 168 main and 45 pilot. I'm at 1200 ft elevation in MO. :yfz
thanks in advance for the help.
Tim
 

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is it a true back fire and not just incomplete combustion? a little pop at shut down should not be a big problem...but it is jetting.

Someone with a similar setup?
 

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i got a 168 45 and stock needel stock clip 2.5 turns out 5oo feet above sea level, no back fire when sutting off oh yeah lid off too baffel out no cam mod yet!!!!! :rock :yfz
 
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