Change 2.4L Engine

Check the cooling system parts such as the radiator, heater and oil cooler hoses, thermostat and their connections for leakage and damage.

1. Remove the engine room under cover front (Refer to REMOVAL AND INSTALLATION ).
   WARNING: When removing the radiator cap, use care to avoid contact with hot engine coolant or steam. Place a shop towel over the radiator cap and turn the radiator cap counterclockwise a little to let the pressure escape through the vinyl tube. After relieving the steam pressure, remove the radiator cap by slowly turning it counterclockwise.
2. Drain the water from the radiator, heater core and engine after unplugging the radiator drain plug and removing the radiator cap.
3. Drain the water in the water jacket by unplugging the drain plug of the cylinder block.
4. Remove the radiator condenser tank and drain the coolant.
   Fig 1: Locating Radiator Condenser Tank Drain Plug

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Replace the cylinder block drain plug gasket, and tighten the drain plug to the specified torque.

   Tightening torque: 39 ± 3 N.m (29 ± 2 ft-lb) 

6. Securely tighten the radiator drain plug.
7. Reinstall the radiator condenser tank.
   Fig 2: Identifying Cylinder Block Drain Plug Gasket

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   CAUTION: Do not use alcohol or methanol anti-freeze or any engine coolants mixed with alcohol or methanol anti-freeze. The use of an improper anti-freeze can cause corrosion of the aluminum components.
8. Use special tool MB991871 to refill the engine coolant up to the top of the radiator port.

   Recommended antifreeze: MITSUBISHI MOTORS GENUINE SUPER LONG LIFE COOLANT PREMIUM or equivalent* 

   NOTE: *similar high quality ethylene glycol based non-silicate, non-amine, non-nitrate and non-borate coolant with long life hybrid organic acid technology.

   Quantity: 6.0 dm ³  (6.34 quarts) 

   [includes 0.65 dm ³  (0.69 quarts) in the radiator condenser tank] 

   Fig 3: Refilling Engine Coolant Using Special Tool MB991871

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: For how to use special tool (MB991871), refer to its manufacturer's instructions.
9. Tighten the radiator cap securely.
10. Remove the radiator condenser tank cap, and add the engine coolant up to the "FULL" line.
11. Turn the A/C switch to OFF position to start the engine and warm up until the cooling fan operates.
    NOTE: This work is to open the thermostat fully.
12. Rev the engine several times and then stop it. Check that there are no coolant leaks.
13. Remove the radiator cap with the engine cool, and then refill the engine coolant up to the top of the radiator port.
14. Tighten the radiator cap securely.
    CAUTION: Do not overfill the radiator condenser tank.
15. Remove the radiator condenser tank cap, and add the engine coolant up to the "FULL" line.
16. Install the engine room under cover front (Refer to REMOVAL AND INSTALLATION ).