Specifications

AIR INJECTION SYSTEM - EFIArticle Text (p. 6)

1984 Mazda RX7For iluv

1) Disconnect intake tube from vent solenoid and remove

connector. Blow through vent solenoid valve from intake tube and make

sure that air does not pass.

2) Apply power to vent solenoid terminals. See Fig. 6. Blow

through vent solenoid valve from intake tube and make sure that air

passes. If vent solenoid does not pass air, replace unit.

Fig. 6: Vent Solenoid Valve

Vacuum Solenoid Valve

1) Disconnect vacuum hose from solenoid valve. Remove vacuum

solenoid valve connector. Blow through vacuum solenoid valve from

connecting tube side and make sure that air passes through solenoid

valve. See Fig. 7.

2) Apply electrical power to vacuum solenoid connector. Blow

through vent solenoid valve from vacuum supply side and make sure that

air does not pass. If air passes through valve, replace unit.

Fig. 7: Air Supply Valve

Air Supply Valve

1) Start engine and run at idling speed. Turn A/C switch on

and make sure that engine speed does not decrease.

2) Disconnect air supply valve connector and make sure that

engine speed decreases. Reconnect air supply valve connector and make

sure that engine speed increases to idling speed (800 RPM). If air

supply valve does not function, replace unit. See Fig. 8.