Quote:
Originally Posted by Topsy11
So timing is correct with peter. The only things left are my pcv I'm waiting for because the hose just sits in the crank case and maybe a fine carby tune. Everything else here has been checked and is good.
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Missing pvc valve could be your backfire problem as it will upset your engine vacuum, this can cause leaner fuel/air mixture ratio making it more volatile resulting in backfiring.