Oil Pressure Problem?

SPIDER92691

MEMBER
CHEVROLET S-10

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?

2 Replies

MERLIN2021

MECHANIC
17,250 POSTS

Only one way to tell, perform a pressure test.

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Friday, August 17th, 2007 AT 2:33 PM

MIKE H R

MECHANIC
3,094 POSTS

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.