To Inspect The Engine Coolant (4.0L) - Mazda B-Series 1997 Workshop Manual

E3
ENGINE COOLANT
ENGINE COOLANT
INSPECTION
Warning
Never remove the radiator cap while the engine is
hot.
Wrap a thick cloth around the cap when removing
it.
When removing the radiator cap, loosen it slowly
until the pressure in the radiator is released, and
then remove it.
4BUOE3-006
Coolant Level (Engine cold)
1. Verify that the coolant level is near the radiator filler neck.
2. Verify that the coolant in the reservoir is at the COLD FILL
mark. Add coolant as necessary.
Coolant Quality
1. Verify that there is no buildup of rust or scale around the
radiator cap or filler neck.
2. Verify that the coolant is free of oil. Replace the coolant if
necessary.
4BUOE3-008
Coolant Leakage
1. Connect a radiator tester (commercially available) to the
radiator filler neck.
2.
Apply 83-1 10 kPa (0.9-1.1 kgf/cm2, 12-1 6 psi) of
pressure to the system.
3. Verify that the pressure is held for at least
2 minutes. If
not, check the system for coolant leakage.
4BUOE3-009