ENGINE KNOCK ON COLD START

  • Tiny
  • trafgod
  • 2002 Chevrolet Silverado
  • V8
  • 4WD
  • automatic

2002 Chevrolet Silverado 1500 4WD with a 5.3L engine, 93,000 miles. When starting with the engine cold (sitting overnight or longer), there is a knocking noise (reminds me of lifter tap) that lasts for 2-3 minutes before fading away. Oil pressure shows fine. This started about a year ago. Any suggestions?

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Saturday, March 19th, 2011 AT 5:03 PM

1 Reply

  • Tiny
  • rasmataz
  • Member

Sounds like a valve lifter leakdown problem

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Saturday, March 19th, 2011 AT 5:05 PM

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