Ticking at Startup

2003 CHEVROLET TRAILBLAZER
92,000 MILES • 6 CYL • 2WD • AUTOMATIC
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CHEVYTRUCK03
  • MEMBER
  • 8 POSTS
Each time the car is started, for 15-20 seconds a ticking noise is present and then goes away. The noise seems to be coming from under the hood. What is causing it and how to repair?
Apr 20, 2011 at 11:05 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Sounds like valve lifters leakdown problem goes away when engine comes up to operating temperature
Apr 21, 2011 at 12:54 AM
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CHEVYTRUCK03
  • MEMBER
  • 8 POSTS
What is a valve lifters leakdown problem and how is it repaired?
Apr 21, 2011 at 9:38 AM
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