1A
Excessive engine oil consumption – Oil leakage
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
Excessive engine oil consumption – Oil leakage
Blown cylinder head gasket
Cylinder Head Inspection:M13A
Leaky camshaft oil seals
Camshaft, Tappet and Shim Inspection:M13A
Sticky piston ring
Cylinders, Pistons and Piston Rings Inspection:M13A
Worn piston and cylinder
Cylinders, Pistons and Piston Rings Inspection:M13A
Worn piston ring groove and ring
Cylinders, Pistons and Piston Rings Inspection:M13A
Improper location of piston ring gap
Cylinders, Pistons and Piston Rings Inspection:M13A
Worn or damaged valve stem seal
Valves and Cylinder Head Disassembly and Assembly:M13A
Worn valve stem
Valves and Valve Guides Inspection:M13A