gsmaclean
Well-Known Member
- Joined
- February 11, 2007
- Messages
- 397
- Reaction score
- 2
- City, State
- Strongsville, OH
- Year, Model & Trim Level
- 03 Limited
My 2003 Limited developed a ticking noise recently. It's at all engine speeds from idle to highway, it's there regardless of engine temperature, when it's dead cold or when the engine is hot. The frequency of the ticking is exactly 1/2 the engine RPM, so that pointed me toward fuel injectors or timing/valves as a source.
I spent about half an hour with my stethoscope tonight trying to localize the source of it, with no luck. It sounds like it's coming from vaguely the center of the intake, right in the top center of the engine - but if I were to make a guess, I'd say it's more on the passenger side than the driver's side.
I tried unplugging the injectors one by one on the passenger side, and the ticking did not go away, so it's not an injector.
Listening on the valve covers the ticking is much quieter, so I don't think it's valves.
So I'm at a bit of a loss as to what it could be. Can anyone offer up some suggestions?
I spent about half an hour with my stethoscope tonight trying to localize the source of it, with no luck. It sounds like it's coming from vaguely the center of the intake, right in the top center of the engine - but if I were to make a guess, I'd say it's more on the passenger side than the driver's side.
I tried unplugging the injectors one by one on the passenger side, and the ticking did not go away, so it's not an injector.
Listening on the valve covers the ticking is much quieter, so I don't think it's valves.
So I'm at a bit of a loss as to what it could be. Can anyone offer up some suggestions?