Loss of Coolant

POSSIBLE CAUSE: CORRECTION
1. Leaking radiator: Inspect radiator. Repair as necessary.
2. Radiator fill cap faulty: Perform cap pressure test.
3. Distorted radiator neck: If radiator neck upper sealing area is distorted, use wood block and mallet to reform neck to fit cap.
4. Leaking reservoir or hose: Replace reservoir or hose.
5. Loose or damaged radiator or heater hoses or connections: Reseat hoses. Replace hoses or clamps.
6. Water pump seal leaking: Replace water pump.
7. Water pump gasket leaking: Replace water pump gasket.
8. Improper cylinder head bolt/screw torque: Retighten cylinder head bolts/screws to specifications. Replace cylinder head gasket if required.
9. Leaking: Make repairs or replace components as necessary to correct leak.
^ Intake manifold.
^ Cylinder head gasket.
^ Engine block coolant drain hole plug or knock sensor.
^ Heater core.