Base Engine Misfire with Coolant Consumption. GMC Truck Jimmy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2003 🢒 Jimmy - 4WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Base Engine Misfire with Coolant Consumption

Cause

Correction

Damaged or improperly installed cylinder head

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

•	Inspect the spark plugs. Refer to Spark Plug Inspection .

•	Verify engine compression. Refer to Engine Compression Test .

•	Inspect the cylinder heads.

•	Inspect the engine block.

•	Repair or replace damaged components as required.