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on 2/7/2002 3:01 AM, Steven Ayres at comwest@att.net wrote: > Backfire indicates a severe timing problem. I'd suggest running the valves > again -- make sure they're opening in the right order -- then recheck spark > timing. I haven't changed the timing since it was running fine, so it shouldn't be that. I will double check it anyway. > Start by setting the throttle valves with the idle screws, long linkage rods > off. They should both be open exactly one turn at idle. > > The Haynes manual has a pretty good procedure. I've found it's a little > tight on the volume screw, though; start those at about two and a half turns > open. > > Do your volume adjustments at warm idle with the linkage off. OK I will give it a try. > If you don't have a Uni-Syn or similar volume sync tool, get one. > > Be sure your balance pipe is clear, in good condition and well sealed to the > manifolds. I didn't check the pipes closely, so I will make sure these are all right. Thanks, Ben Doughney '75 1200L '63 1200 - Ringo '71 1600TL http://members.tripod.com/~superkafer/ ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/