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Old 01-22-2013, 10:20 AM   #5
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Join Date: Mar 2006
Location: Southern California
Posts: 23,846
My Ride: M54B30
If the sound gets faster when you rev it, that's not a good sign. If I had to guess, the car was overheated before and headgasket blew with introduced water into the oil and one or more of the crank or connecting rod bearings took a dump. Look for any signs of overheat/work being done on the engine
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