Toyota 3S-GE Repair Manual page 342

EG'328 ENGINE - COOLING SYSTEM
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Radiatorcap Tester 3. INSPECT COOLING SYSTEM FOR LEAKS
'* \ (a) Fill the system with coolant, and attach a radiator cap
_ tester to the water filler.
'NJ ' (b) Warm up the engine.
_ ' (c) Pump it to 1 18 kPa (1.2 kgf/cm', 17.1 psi). and check
_ ') Q1 that the pressure does not drop.
y If the pressure drops, check the hoses, radiator or
% EC; "$2 water pump for leaks. If no external leaks are found,
» \ P1671, check the heater core, cylinder block and cylinder
head.
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4. REINSTALL WATER FILLER CAP
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