93 Cadillac deville

1993 CADILLAC DEVILLE
4 CYL • AUTOMATIC
Avatar
CHEYKIMES
  • MEMBER
  • 1 POST
Why would my car making a tapping/knocking sound when I start it?
Apr 30, 2011 at 3:55 PM
Advertisement
Avatar
FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
something in engine like valve lifter is out of oil and ticks/taps till it gets some oil. if noise does not go away after running awhile then it would have to be replaced.
Apr 30, 2011 at 4:31 PM
Avatar
CADIEMAN
  • ✓ASE Certified Mechanic
  • 3,544 POSTS
  • ASE Certified Mechanic
you should have the oil pressure checked.delco had big problems with their oil pumps wearing out.they were droping the oil pan, then remove and replacing the oil pump.if the pump is not fully working your hurting your engine.l
Apr 30, 2011 at 6:04 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.