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Old 11-22-2012, 07:14 PM   #13880
Ladder106
It's a short cut, really
 
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Joined: Jan 2005
Location: Davis, CA
Oddometer: 4,860
Overhead cam engines run with little to no oil almost always damage the cams and rockers first.

The noise you're hearing is most likely hugely increased clearance between the valves and the rockers caused by accelerated wear on the cams.

Hate to be the bearer of bad news but oil is the life-blood of your engine....without it bad things happen.

You can check this fairly easily by pulling the valve covers off and having a look at the cams.
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