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Experts needed! Two dead cylinders. 700

posted by  überbox on  Sat Jul 5 16:17 CST 2003
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last visit: Thu Nov 1 16:21 CST 2001
[RELATED]

hello gurus (hopefully)!
Your help is needed. I'm looking for advise regarding the problem I have with my 1988 744 Turbo with 244k. Problem is that cylinders 2 and 3 are not working. I can pull the spark plug wire off 2 and 3 and nothing changes but both cylinders have spark. I've tried different plugs and wires and nothing changed. All tune up parts are new (within the last month). Everything checks out fine but the car still runs only on cylinders one and four. There is ignition going to all cylinders, all injectors are working properly, fuel delivery system is in spec, there are no vacuum leaks and compression is fine. What do I check next? I don't know what I should be looking for as everything seems to be ok. I've checked the basics a million times. Things I'm considering are power stage, ignition module and hall sensor connection and I'm rather unfamiliar with all three. This is the car I use (normally) to go to work so I'm trying to identify the issue asap. Thanks so much.


J. Studer






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