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Old 06-25-2002, 11:49 PM
Posts: n/a
A little more info.... The sound is a deeper tone/note than a tapping valve. Doesn't matter if the engine is cold or hot the sound/knock is always there when the engine is running. The sound doesn't change when you disconnect the spark plugs one at a time. The water pump and belt tensioner were replaced about 10K miles ago, so they shouldn't be the problem.
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