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960 & S90 rough engine S90-V90 1997

uid 19's pic
posted by  jbowers on  Thu Oct 21 09:49 CST 2004
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last visit: Sun Jan 22 13:49 CST 2012
[RELATED]

Have him read the codes from the ECU out of the OBD-II socket. We can tell you which cylinder is missing.

Based on my personal experience, my first place to check is the intake manifold gasket around cylinder #1, (first one from the radiator).

If the gasket is redish-orange, it is the frist design and WILL fail sooner or later. If greenish-aluminum it should be OK but check anyway.

Usually a weak spark will show under load, not at idle. What are this mechanic's quaalifications? If he doesn't have a code reader, he can't work on this car unless you want to pay for a lot of expensive parts while he tries to hit the right one.
--
'96 965 with 16' wheels at 120K. Had '85 745 Turbo Diesel for 200K.






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