For 1990-2009 cars

Cause | Correction
--- | ---
Faulty cylinder head gaskets and/or cracking or other damage to the cylinder heads and engine block cooling system passages. Refer to Cylinder Head Replacement . (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.