If the oil level is full, remove the oil filter to see if there is oil in it. Try a replacement filter. If it doesn't help and the engine is still making noise, shut if off. Don't allow it to run longer than it takes for you to identify if the problem is solved. The only other thing is the oil pump. The screen could be plugged or the pump could be bad.
If you have questions, let me know.
Joe
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Friday, December 19th, 2008 AT 11:23 PM