Mechanical

1. Suspend the water thermostat and an accurate thermometer in a suitable container filled with water. Do not allow the water thermostat and the thermometer to touch the bottom of the container.
2. Heat the water until boiling while observing the thermometer temperature.





3. Note: "Fully open" means the water thermostat valve lifts a distance of 5.8 mm (0.23 inch) or more off of the valve seat.

The water thermostat should begin to open at:
^ 87-90°C (188-195°F) 2.0L SPI.
^ 90-94°C (194-201°F) 2.0L Zetec
4. The water thermostat should be fully open at:
^ 100°C (212°F) 2.0L SPI.
^ 106°C (223°F) 2.0L Zetec
5. Replace the water thermostat if it does not operate as specified.