Circuit/System Testing
- Inspect the engine or review the service history of the vehicle for any recent repairs involving the timing chain, camshaft, or crankshaft.
- Test for the following conditions:
- The correct installation of the camshaft sensors
- The correct installation of the crankshaft sensor
- A timing chain tensioner condition
- An incorrectly installed timing chain
- Excessive play in the timing chain
- A timing chain that jumped teeth
- A crankshaft or camshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft
- If you find any of the above conditions, repair as necessary.