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A tic tic sound synchronized with the rotation of the engine

Tiny
RANYRIZK
  • MEMBER
  • 2003 CADILLAC CTS
  • 3.2L
  • V6
  • RWD
  • AUTOMATIC
  • 150,000 MILES
I hear a sound tic tic tic, synchronized with the rotation of the engine mainly when the engine is at load.
No DTC.
No problem in the lifters.
Best regards
Wednesday, December 28th, 2016 AT 7:09 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,864 POSTS
The best suspect is an exhaust leak. The clue you observed is it only occurs under load. The most common location for this is right where the exhaust manifold bolts to the engine block.
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Wednesday, December 28th, 2016 AT 11:47 AM

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