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On 19 Sep 2001, at 8:34, jim wrote: > To follow up, the engine in question (stalling at idle/hard to start) > is a FI '72 engine with a single vacuum adv. dizzy. A 72 FI should have a dual vac adv dizzy, so SOMETHING has been changed around here. > I was able to get the car home the next day. I took the fuel filter > off and blew through it hoping that would clean it out enough to drive > the car home, and it was (I don't know if that even did anything, but > I figured it wouldn't hurt). The car chugged and died as I was > parking it. I'm awaiting a new fuel filter for the car and I have FI > gas line ready to replace the lines when I replace the fuel filter. I > will also get a pressure gauge to measure the fuel pressure and make > sure its okay for a FI car. I doubt if it is the fuel pressure if it causes problems at idle, where the fuel demands are the least. I'd go ahead and measure the fuel pressure now, just to eliminate that as a likehood. Then concentrate on valve adjustment, dwell, and timing. This may be difficult, because this is not a totally 72 engine so the question of how to time it comes up right away. Study your engine along with the Bentley manual and try to figure out what you really have there. How many terminials are there on the throttle valve switch? > I have one additional comment/question. When the car is starting to > stall, if I can give it enough gas and time the clutch I can prevent > it from stalling, but it backfires before it moves forward. I want to > think exhaust leaks can cause backfires, but can the backfire be > caused by something else that may also be a part of my stalling/fuel > delivery problem? Once the rain stops I'll start trying to diagnose > the problem. First things to check are the timing and the advance mechanisms. > > > Just to follow up, the car had a solid tune-up 3 weeks ago > > > (points, rotor, cap, regap plugs, timing, idle speed). Did it misbehave immediately after this tuneup, or did it run fine for awhile? - Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe