Celica Supra L6-2759cc 5M Ser (1982)
Air Injection Pump: Testing and Inspection
Fig.63 - Air Pump Discharge Pressure Test
Fig.64 - Air Pump Discharge Pressure Test
Fig.65 - Air Pump Discharge Pressure Test
1. Check air pump for abnormal noise.
2. Check air pump discharge pressure as follows:
a. Connect tester, Figs. 63-65, to engine.
b. Start engine and raise speed as specified:
1968-71 3K-C 2200 RPM
1968-69 3R-C 1250 RPM
1973-74 4M 1350 RPM
1974 2T-C 1950 RPM
1975-76 & 1978-79 4M 1750 RPM
1975-82 Exc. 4M 1800 RPM
c. With engine running at the specified speed, the tester should indicate the green zone.
d. On all 1975-82 engines, if tester indicates in the red zone, the pump assembly is defective.
e. On 1969-74 engines, if tester indicates in the red zone close relief valve outlet with hand and recheck. If tester indicates in the green zone, the
