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Old 03-18-2011, 01:00 PM   #43
ebrabaek
Beastly Adventurer
 
Joined: Jan 2010
Location: El Paso,NM
Oddometer: 4,359
Again..... A little back firing is absolutely normal.... Unburned gasses in the pipe goes leaner when closing the throttle......fuel gets cut....but air moves somewhat more unrestricted....pipe goes instantly lean....and you have backfiring.... What you don`t want is any backfiring while the throttle is open. Then there is a problem.


Erling
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