GolfVenture Posted November 2, 2011 Share #1 Posted November 2, 2011 I've installed new plugs, synced the carbs. Then on a test drive, the MKII sounded much better, better all around performance also. Then at one back road stop light, when I got the green light I throttled the VR when I shifted from 1st to 2nd or 2nd to 3rd, of which I can't recall it backed fired in the shifting process, when I left off the gas. Does the Back Fire indicate I need to make an adjustment? Link to comment Share on other sites More sharing options...
muffinman Posted November 2, 2011 Share #2 Posted November 2, 2011 I would think that the backfire is caused by the carbs probably needs a fuel air mixture adjustment.It could be a fuel problem lack of proper fuel pressure or flow.Have you changed the fuel filter? Hows the air filter? valve adjustment should not make it backfire Jeff Link to comment Share on other sites More sharing options...
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