Thread: Spark Knock,78' Cadillac
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Old 10-25-2011, 11:34 AM   #4
maxwedge
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Re: Spark Knock,78' Cadillac
If so designed pull up on ther egr diaphragm from below the egr housing ,the engine should stall or run rough, if not it is bad or the passages are clogged, if it does, check the vacuum circuitry to the egr.
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