Base Engine Misfire with Coolant Consumption

Engine Mechanical - 3.0L LM2 Diesel | Diagnostic Information and Procedures | Document ID: 2370732

Inspection	Action
DEFINITION: Base engine misfire with coolant consumption
Preliminary Inspection	Verify that there are no external coolant leaks. Refer to Symptoms - Engine Cooling.
Isolate Affected Cylinders	Cylinder balance test with scan tool Cooling system pressurization Inspection of glow plugs Compression test
EGR System Inspection	Inspect EGR valve and intake system for evidence of coolant leakage. Replace the EGR cooler if any problem is found.
Cylinder Head Gasket Leakage	Remove cylinder heads of the affected cylinder bank and inspect for damage. Replace components as necessary.
Cylinder Head or Engine Block Damage .	Inspect the cylinder head for cracks. Inspect the cylinder block for damage. Inspect the cylinder block to head mating surface for straightness. Replace components as necessary.