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Rough Running ES 1800 1973

posted by  Don Foster on  Mon Jan 19 23:49 CST 2004
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last visit: Sun Oct 5 11:53 CST 2014
[RELATED]

Compression test? Could be a bad valve...

Yes, could be a plugged or carboned-up injector. The Volvo manual describes how to evaluate the spray patterns and flow rates from each of the four injectors.

If you have extra injectors, try swapping in a spare. Or try swapping the suspect injector with a good one from a different cylinder.

The triggering contacts operate the injectors in pairs. So a bad contact set will affect two injectors, not one.
--
Don Foster (near Cape Cod, MA)






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