Engine tapping until up to temp ?
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Engine tapping until up to temp ?
2005 Bonneville sle L36 3.8
I am getting a tapping sound that varies with rpm up to about 2200 that happens until the car reaches operating temp. I removed the belt to make sure not HB or any other pulley and still there. Again, the sound completely diminishes when at operating temp. Doesnt sound like a lower end knock or bearing. Could this be a bad lifter? Or loose rocker arm? If anyone has experienced this or could give some input that would be great. Thank you
I am getting a tapping sound that varies with rpm up to about 2200 that happens until the car reaches operating temp. I removed the belt to make sure not HB or any other pulley and still there. Again, the sound completely diminishes when at operating temp. Doesnt sound like a lower end knock or bearing. Could this be a bad lifter? Or loose rocker arm? If anyone has experienced this or could give some input that would be great. Thank you
Thread Starter
Member
Posts like a V-Tak
Joined: Oct 2010
Posts: 27
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The car has 228K on it and has always been maintained. Recently changed the oil and have always changed it at around 3500 to 4000 miles using full synthetic mobil 1 5w 30. Its definitely valve train related but strange that it 100% goes away when fully warmed up
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