Engine Coolant Manifold Cleaning And Inspection
- Clean all excess dirt and debris from the engine coolant manifold housing.
- Inspect for leakage between the water output flange (4) and the thermostat housing (3).
- Inspect the engine coolant manifold for the following conditions:
- Gasket and hose sealing surfaces for excessive scratches or gouging
- Restrictions within the internal coolant passages
- Excessive side-to-side play in the pulley shaft
- Leakage at the water inlet housing or rear cover
- Leakage at the water outlet housing or water pump outlet assembly
- Leakage at the water pump vent hole
A stain around the vent hole is acceptable. If leakage, dripping, occurs with the engine running and the cooling system pressurized, replace the water pump.
- Wear or damage in the belt tracking area of the pulley