Engine Coolant Leakage Inspection
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
- Remove and install all parts when the engine is cold, otherwise they can cause severe burns or serious injury.
- Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes.
- When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.
- Inspect the engine coolant level.
- Remove the cooling system cap.
- Clean the installation parts of the cooling system cap and the upper radiator hose.
- Install the SST and a radiator cap tester to the coolant reserve tank filler port.
- Apply pressure using the radiator cap tester.CAUTION:
- Applying more than 127 kPa {1.3 kgf/cm2 , 18 psi} can damage the hoses, fittings, and other components, and cause leaks.
Pressure
- 127 kPa {1.3 kgf/cm 2 , 18 psi} [1 min]
- When pressurizing the radiator, verify that the pressure is maintained.
- If the gauge needle drops, it may indicate water leakage, therefore perform leakage inspection.
- If engine coolant leaks from the upper hose installation part, replace the upper hose and the clamp.
- If the engine coolant leaks from the main body of the radiator (caulked part), replace the radiator.
- If the gauge needle drops, it may indicate water leakage, therefore perform leakage inspection.