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Old 11-26-2010, 11:22 PM
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sprintertech sprintertech is offline
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Quote:
Originally Posted by GregInAtl View Post
SO the sound of a lifter tap until my truck warns up, is this normal, or is it as I thought and is sludge/heat related? I always use conventional oil in this vehicle, 5k oil changes w/ castrol high mileage.

i will say that while noise in general is not normal its not abnormal for a 4.7 to have some lifter/rocker noise at cold start for a few secs.......

if your noise lasts longer then say around 30sec id be concerned....still no way to know the cause without some diag/teardown......
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