Excessive engine oil consumption
Perform troubleshooting referring to the followings when ECM has detected no DTC and no abnormality has been found in Visual Inspection:M13A without VVT and Engine Basic Inspection:M13A without VVT .
Condition Possible Cause Action
Excessive engine oil consumption
Sticky piston ring
Worn piston and cylinder
Worn piston ring groove and ring
Improper location of piston ring gap
Worn or damaged valve stem seal
Worn valve stem