Vauxhall Workshop Service and Repair Manuals > Astra J > Engine | Engine mechanics - 1.6L (LDE, LLU), 1.8L (2H0) | Other Information | Base Engine Misfire with Excessive Oil Consumption

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.

•	Repair or replace as required.