I have a timing rattle only when engine(4

Tiny
ANONYMOUS
  • 2004 CHEVROLET S-10
  • 96,000 MILES

I have a timing rattle only when engine(4.3)is warmed up. Truck runs great no check engine light.I replaced cap and rotor with no difference. On cooler days rattle dissapears. What could this be

Saturday, October 20th, 2012 AT 7:42 PM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,526 POSTS

Could be carbon build up in intake valves, could be failed egr system or it could be too low octane for fuel.

Roy

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Saturday, October 20th, 2012 AT 7:43 PM

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