Service Information

Cruze

Base Engine Misfire with Excessive Oil Consumption

Cause

Correction

Worn valves, valve guides and/or valve stem oil seals

•	Inspect the spark plugs for oil deposits.

•	Repair or replace as required.

Worn piston rings

Oil consumption may or may not cause the engine to misfire.

•	Inspect the spark plugs for oil deposits.

•	Inspect the cylinders for a loss of compression. Refer to Engine Compression Test .

•	Perform cylinder leak down and compression testing to determine the cause. Refer to Cylinder Leakage Test

•	Repair or replace as required.