What is this tapping noise in my 2500 5.7L hemi v8 mega/slt/larime cab truck? Just started happing after a oil change. I tried changing to a heavier oil (10-30) then I added a lucas engine treatment bottle. And the tapping is still there, however somewhat better, with lack of noise. My oil light has never come on and all my gauges are working. When I drive or acelerate it sounds as if it goes away. After I drive for a period of time and then park and idel the tapping will return only not as pronounced. This is not a loud tapping however ENOUGH to cause me alarm with possible major engine repair. Thank you
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Thursday, August 26th, 2010 AT 7:41 AM