Coolant Leak Check
CHECKING COOLANT LEAK1. Loosen the radiator cap.
2. Confirm that the coolant level is up to the filler neck.
3. Install a radiator cap tester to the radiator filler neck and apply 140 kPa (1.4 kg/cm2, 20 psi) pressure. Hold it for two minutes in that condition, while checking for leakage from the radiator, hoses or connections.
NOTE:
1. Radiator coolant may be extremely hot. Do not open the system because hot, or scalding water could gush out causing personal injury. Allow the vehicle to cool before servicing this system.
2. Be sure to clean away any moisture from the places checked completely.
3. When the tester is removed, be careful not to spill any coolant from it.
4. Be careful, when installing and removing the tester and when testing, not to deform the filler neck of the radiator
4. If there is leakage, repair or replace with the appropriate part.
RADIATOR CAP PRESSURE TEST
1. Use an adapter to attach the cap to the tester.
2. Increase the pressure until the gauge stops moving.
Main valve opening pressure: 83 - 110 kPa (0.83 - 1.1 kg/cm2, 12 - 16 psi)
Vacuum valve opening pressure: -7 kPa (-0.07 kg/cm2, -1.0 psi)
3. Check that the pressure level is maintained at or above the limit.
4. Replace the radiator cap if the reading does not remain at or above the limit.
NOTE: Be sure that the cap is clean before testing, since rust or other foreign material on the cap seal will cause an incorrect reading.