Base Engine Misfire with Coolant Consumption

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Cause	Correction
Faulty cylinder head gaskets and/or cracking or other damage to the cylinder heads and engine block cooling system passages. Refer Diagnostic Starting Point - Engine Cooling . Coolant consumption may or may not cause the engine to overheat.	Inspect for spark plugs saturated by coolant. Refer to Spark Plug Inspection . Perform a cylinder leak down test. Inspect the cylinder heads and engine block for damage to the coolant passages and/or a faulty head gasket. Repair or replace as required.