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Backfire front of engine

sjk

Joined Oct 2010
11 Posts | 0+
Hi guys I seem to developed a back fire from front of engine , wells sounds like its from the front when riding . It only happens when I roll of the throttle .

Any suggests would be greatfly recieved
 
check you havent lost one of the bolts (the ones that are removed to set up the CO levels) from the downpipe, i lost one out of the rear pipe and had a similar sound. either that or it could be blowing from the flange gasket
 

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