Water outlet side
83–113 kPa
(0.85–1.15 kgf/cm
2
, 12.1–16.4 psi)
Minimum opening pressure:
Radiator side
78 kPa (0.8 kgf/cm
2
, 11.4 psi)
Water outlet side
69 kPa (0.7 kgf/cm
2
, 10.0 psi)
If the opening pressure is less than minimum, replace the ra-
diator cap.
2. INSPECT COOLING SYSTEM FOR LEAKS
(a) Fill the radiator and engine with engine coolant and attach a
radiator cap tester to the water outlet.
(b) Warm up the engine.
(c) Disconnect the reservoir hose from the radiator overflow
pipe.
(d) Install a rubber cap onto the radiator overflow pipe, then fix
the rubber cap in place with a clip.
(e) Pump it to 127 kPa (1.3 kgf/cm
2
, 18.5 psi) and check that the
pressure does not drop.
If the pressure drops, check for leaks from the hoses, radiator
or water pump. If no external leaks are found, check the heat-
er core, cylinder block and head.
(f) Remove the radiator cap tester and install the radiator cap to
the water outlet.
(g) Remove the clip and rubber cap from the radiator overflow
pipe.
(h) Connect the reservoir hose to the radiator overflow pipe.
EG–254
–ENGINE TROUBLESHOOTING COOLING SYSTEM
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