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Will do. Thanks Jim. --- Jim Adney <jadney@vwtype3.org> wrote: > On 21 Oct 2003 at 13:28, William Kunz wrote: > > > Sorry to bring this up again, but it looks like > I'm > > getting a backfire thru the carb. When I go to > start > > the car, the engine will kick over with a couple > of > > pumps to the accelerator. While the engine is > trying > > to maintain an idle there is "popping" from the > > engine, not thru the exhaust. My friend confirmed > this > > as he saw a flash come out of the right hand carb > when > > we took the air cooler off and restarted. I have > dual > > 32 PDSIT carbs. After the car is idling, the > popping > > stops and the car runs normally. Any suggestions? > > Is there any chance that you have the idle ignition > timing set extremely > advanced? It makes me wonder if the mechanical > advance on your distributor > might be frozen and someone has dialed in a lot of > static advance to make it > seem to work better at speed. I really don't know if > this would cause your > problem, but I can't think of any other reason other > than an intake valve that > is not sealing, but that's pretty unusual. > > I suppose it's possible that you have an intake > valve stem which is varnished > up and is sticking until it gets warm. This might > explain why ignition within > the chamber is able to flash back to the carbs. You > might find the culprit by > doing a compression test with the engine cold. > > -- > ******************************* > Jim Adney, jadney@vwtype3.org > Madison, Wisconsin, USA > ******************************* > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > List info at http://www.vwtype3.org/list | > mailto:gregm@vwtype3.org > __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com