Models: 2008-’12 Accord L4 and 2007-’12 CRV
Problem: At cold start-up, the engine rattles loudly for about two seconds.
Cause: The variable valve timing control (VTC) actuator is defective.
Solution: Replace the VTC actuator. This procedure does not require the complete removal of the cam chain and associated parts, so repair time is much shorter.
Diagnostic Procedure:
1. Allow the engine oil to drain from the VTC system by not starting the engine for at least 6 hours.
2. Start the engine and immediately listen for a loud rattle. On start-up, do you hear a loud engine rattle that lasts about 2 seconds?
Yes: Replace the VTC actuator.
No: If you hear a different noise, continue with normal troubleshooting. If you don’t hear an abnormal noise, get more information from the customer and, if needed, continue with normal troubleshooting.
Courtesy of ALLDATA.
