2001 Cadillac Deville knocking

2001 CADILLAC DEVILLE
129,900 MILES • V8 • FWD • AUTOMATIC
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J0COOL67
  • MEMBER
  • 1 POST
when the engine is started sometimes i can hear a knocking, not all the time; usually on cold starts
May 29, 2010 at 2:24 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Probable causes here could be valve lifters leakdown-it makes the noise during initial start ups
May 29, 2010 at 9:08 PM
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