Base Engine Misfire with Excessive Oil Consumption. Chevrolet S10 Pickup

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2003 🢒 S10 Pickup - 2WD 🢒 Engine 🢒 Engine Controls - 2.2L (LN2) 🢒 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. Refer to Spark Plug Inspection in Engine Controls 2.2L (LN2).

•	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. Refer to Spark Plug Inspection in Engine Controls 2.2L (LN2).

•	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.