Inspection

Note: Overheating or failure to reach normal operating temperature can indicate improper thermostat operation. Inspection and temperature-testing of the water thermostat will verify its condition.

Note: Insufficient heat and failure of the engine to reach operating temperature can indicate low temperature leakage of the water thermostat. Cool the water thermostat to room temperature for this inspection.

1. Remove the water thermostat.





2. Hold the thermostat against a lighted background and inspect for light between the valve and valve seat. If light is visible, replace the thermostat.