Mitsubishi 3000GT Service Manual page 408

ENGINE COOLING
ON-VEHICLE SERVICE
ENGINE COOLANT LEAK CHECK
1. Loosen cap.
2. Confirm that the engine coolant level is up to the filler
neck.
3. Install an adapter and cap adapter to the water outlet
fitting and apply 160 kPa (23 psi) pressure. Hold pressure
for two minutes, while checking for leakage from the radia-
tor, hose or connections.
Caution
Be sure to completely clean away any moisture from
the places checked.
When the tester is removed, be careful not to spill
any engine coolant from it.
Be careful, when installing and removing the tester
and when testing, not to deform the water outlet fitting.
4. If there is leakage, repair or replace the appropriate part.
CAP PRESSURE TEST
1. Use a cap adapter to attach the cap to the tester.
2. Increase the pressure until the indicator of the gauge
stops moving.
Limit: 65 kPa (9.2 psi)
Standard value: 75-105 kPa (11-15 psi)
3. Replace the cap if the reading does not remain at or
above the limit.
NOTE
Be sure that the cap is clean before testing, since rust
or other foreign material on the cap seal will cause an
improper indication.
ENGINE COOLANT REPLACEMENT
Refer to GROUP 00 - Maintenance Service.
ENGINE COOLANT CONCENTRATION TEST
Refer to GROUP 00 - Selection of Coolant.
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