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Knocking Pinging help, causes and cures (archive)
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Posted by 95 ///M3 on September 16, 2001 at 17:25:55:

My check engine comes on w/ a knock sensor fault. Both Ping sensors were changed, and I still get this check fault problem. Questions:
1) What are possible causes of this fault?
2) What are possible cures for this fault?
3) Is/Are there any type of additive that can be administered, ie. engine oil treatments, synthetic oil (I am currently running 20/50 non-synthetic oil currently), NOS Octane Booster, or other octane treatments?

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