LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 407 (Engine Mechanical - 6.2L (LT4) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Base Engine Misfire with Coolant Consumption

Base Engine Misfire with Coolant Consumption

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
Cause Correction
Faulty cylinder head gaskets and/or cracking or other damage to the cylinder heads and engine block cooling system passages
Coolant consumption may or may not cause the engine to overheat.
  1. Inspect for spark plugs saturated by coolant. Gas Engine Ignition Spark Plug Inspection
  2. Perform a cylinder leak down test. Cylinder Leakage Test 
  3. Inspect the cylinder heads and engine block for damage to the coolant passages and/or a faulty head gasket. Coolant in Combustion Chamber 
  4. Repair or replace, as required.
scientia non olet · About LEMON Manuals