Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site harvard.ARPA Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!whuxl!whuxlm!harpo!decvax!linus!philabs!cmcl2!harvard!friedell From: friedell@harvard.ARPA (Mark Friedell) Newsgroups: net.auto.tech Subject: diagnostic problems with VW fuel injection Message-ID: <476@harvard.ARPA> Date: Tue, 5-Nov-85 00:22:26 EST Article-I.D.: harvard.476 Posted: Tue Nov 5 00:22:26 1985 Date-Received: Thu, 7-Nov-85 06:22:08 EST Distribution: net Organization: Aiken Computation Laboratory, Harvard Lines: 16 I'm trying to debug the fuel injection on my '78 Rabbit and I've discovered that I need about $10,000 in diagnostic equipment to do it. In particular, I'd like to get a reading of the control pressure between the control-pressure regulator and the fule distributor. The shop manual claims that this is a piece of cake -- just connect your special VW CIS control-pressure guage. And of course... to adjust the fuel mixture... just connect your home exhaust-gas analyzer. It seems that a control-pressure guage and an exhaust-gas analyzer are need to test just about any part of the fuel injection. Does anyone know how to rig a home-brew version of either of these essential diagnostic tools? P.S. My problem seems to be a bad control-pressure regulator; when cold, the car starts and runs fine, but when it warms up the control pressure seems to drop more than it should causing hard starting and a feeble idle.