Oil Pressure Problem?

CHEVROLET S-10
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SPIDER92691
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Have a 2002 Chevy S10 V-6 auto with 58K miles on it. After my last oil change, when cold-start a tapping sound (lifter?) occurs for a couple minutes, then goes away???

Does this sound like an oil pump problem or the wrong oil viscosity was used???
Aug 17, 2007 at 2:23 PM
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MERLIN2021
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Only one way to tell, perform a pressure test.
Aug 17, 2007 at 2:33 PM
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MIKE H R
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The lifters could be a little gummed up. it sounds like the lifters are not holding pressure, this is nothing to be allarmed about as long as the tapping stops after a short time and there are no other knocking sounds. When the engine starts it pumps the lifter back up , then the tapping stops. I have a subaru with 137,000 miles on it. I installed a manual pressure guage. When i start the subaru it sounds like a bunch of marbles in it, after running about 5 minutes the sound gets less and less until it stops. I am running 70 pounds of oil pressure. You can add a can of lucas oil or something like stp to keep the engine lubed when you shut it off, so you don't have a dry start. {when all the oil has drained back into the pan} If they get too loud I would have the lifters checked and adjusted.
Aug 17, 2007 at 2:40 PM
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