Focus L4-2.0L DOHC VIN 5 (2003)
Engine Block Heater: Service and Repair
Block Heater
Removal
1. Drain the cooling system.
2. Raise and support the vehicle.
3. Disconnect the block heater electrical connector.
4. CAUTION: Make sure the cylinder block bore does not become scratched when removing the block heater. Failure to follow this instruction may
result in coolant leaks.
Remove the block heater.
^
Discard the block heater.
Installation
NOTE: Install a new block heater.
1. Clean the inside diameter of the cylinder block bore and surface.
2. NOTE: Apply a small amount of engine coolant to the block heater O-ring seal before installing it to the cylinder block.
NOTE: Do not tighten the block heater at this stage.
Install the block heater with the electrical connector of the block heater at the 9 o'clock position.
3. CAUTION: Do not overtighten the block heater. Failure to follow this instruction may result in coolant leaks.
