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Sounds like dwell/points/condenser to me. Check to see what colour the spark is. -----Original Message----- From: whizby [SMTP:whizby@pdq.net] Sent: Thursday, January 14, 1999 3:26 PM To: volks wagen club; type!!! Subject: [T3] back fire now the problems start to surface. i finally finished my engine rebuild and got it back inthe car. 1776 cc, engle 100 cam but at the moment i am forced to use the stock carbs(32 pdsit). i know that they are too small, but my resources are all tapped out at the moment. it idles well around 850 rpm's and revs smoothly until i put it under load. then it sputters and backfires. if I'm cruising along with the throttle just barely open I'm fine but if i open past about 1/4 i lose power and the engine almost wants toðb“Ý 've been driving it for four days now and it was fine. all this started on the way to work this morning. the timing is dead on (7.5* btdc) as is the dwell and i can't find anything that has changed in the last two days. as soon as the engine cools down I'll pull the spark plugs and see what they look like. I'm assuming this could be due to improper jetting, but like i said it's driven fine for four days. anybody got any ideas? Brandon 73 square ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe