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Spark Knock,78' Cadillac
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10-24-2011, 07:39 AM
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maxwedge
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Re: Spark Knock,78' Cadillac
Make sure the egr system works. I assume you are checking the timing with the dist. vacuum is disconnected, but an inop egr could be the issue, usually this would only affect the engine when fully warmed up.
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