Quote:
Originally Posted by ILUVMILS
It's not common, but it's not unheard of either. After shutting off a hot engine (M272), and re-starting it a short time later, you hear a loud "DUNK....DUNK....DUNK...." for a few seconds. Is this your noise?
The fix is pretty straight-forward. Remove engine and dis-assemble bottom end. Inspect markings on crank-case, indicating what size bearing shells the upper side requires. Once this is determined, replace OE uppers with one size smaller bearing shells. Let us know what the dealer says.  |
Actually you discribed it pretty close! well it goes to the dealer Monday, I service it or have it service according to MB intervals and use Mobile One. In fact the last couple services have been at the dealer. it sounds a little deep in the engine to be tappet, although I could not completly rule it out. With Warranty left i will not be pulling any engines.