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2000 Marquis Knocks

Old 11-05-2011, 09:52 PM
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Join Date: Oct 2011
Location: California
Posts: 1
Default 2000 Marquis Knocks

My Marquis knocks on a steep hill near my home. Went to high test gas which helped somewhat, but car should work on regular. There are one or two knock sensors on car, but I can't figure out how to check them. I also can't figure out how to retard the timming without reprogramming the computer. Any thoughts?

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