Base Engine Misfire with Excessive Oil Consumption. GMC Truck Sonoma Pickup

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2001 🢒 Sonoma Pickup - 2WD 🢒 Engine 🢒 Engine Mechanical - 2.2L 🢒 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.

•	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.

•	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.