A tic tic sound synchronized with the rotation of the engine

2003 CADILLAC CTS
150,000 MILES • 3.2L • V6 • RWD • AUTOMATIC
Avatar
RANYRIZK
  • MEMBER
  • 39 POSTS
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
Dec 28, 2016 at 7:09 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
CARADIODOC
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 34,308 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.
Dec 28, 2016 at 11:47 AM
Advertisement