1A
Engine noise – Crankshaft noise
Perform troubleshooting referring to the followings when ECM has detected no DTC and no abnormality has been found in Visual Inspection:M13A with VVT and Engine Basic Inspection:M13A with VVT .
Condition Possible Cause Action
Engine noise – Crankshaft noise
NOTE:
Before checking mechanical noise, make sure that: Specified spark plug is used. Specified fuel is used.
Low oil pressure
“Low Oil Pressure” under Engine Symptom Diagnosis:M13A with VVT
Worn bearing
Main Bearings Inspection:M13A
Worn crankshaft journal
Crankshaft Inspection:M13A
Loose bearing cap bolts
Main Bearings, Crankshaft and Cylinder Block Removal and Installation:M13A
Excessive crankshaft thrust play
Crankshaft Inspection:M13A