Tacoma Extra Cab 4WD L4-2693cc 2.7L DOHC MFI (1997)
Radiator Cap: Testing and Inspection
1. Remove radiator cap.
WARNING: To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator are still hot, as fluid and
steam can be blown out under pressure.
2. Inspect radiator cap.
NOTE:
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If the radiator cap contaminations, always rinse it with water.
Using a radiator cap tester, pump the tester and measure the vacuum valve opening pressure.
Standard opening pressure: 74 - 103 kPa (10.7 - 14.9 psi)
Minimum opening pressure: 59 kPa (8.5 psi)
NOTE: Use the tester's maximum reading as the opening pressure.
If the opening pressure is less than minimum, replace the radiator cap.
3. Reinstall radiator cap.