Tapping when car is started, stops after a few seconds

Tiny
CORINNE KOWALSKEY
  • MEMBER
  • 2009 CHEVROLET COBALT
  • 71,000 MILES
Tapping when engine started. Stops after few seconds. Happened two months ago one time. Never again until today.
Friday, January 5th, 2018 AT 1:44 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

If it is a valve train noise, it could be a tuck lifter. Using a product called sea foam to try and break down the varnish in the lifters.

The other possibility is the lower end that has the bearings. If there is excessive clearance or the oil pump is weak it will also cause the issue.

Roy
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Saturday, January 6th, 2018 AT 4:47 AM

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