Air Injection: Testing and Inspection

PULSED SECONDARY AIR INJECTION SYSTEM INSPECTION

CAUTION
- If the pulsed secondary air injection valve is broken, exhaust gases will be drawn back into the system. Disconnect the pulsed secondary air injection hose from the air cleaner and place a small steel plate against the end of the hose. Check the amount of secondary air intake (vacuum) while the engine is at idle.

1. Remove the pulsed secondary air injection solenoid.





2. Connect a hand vacuum pump to the pulsed secondary air injection solenoid nipple.

3. Use a jumper wire to connect the solenoid valve terminal to the battery terminal.





4. Turn on and off the negative battery terminal side jumper wire and apply 67 kPa (19.7 in.Hg) of vacuum to check airtightness and ventilation between (A) and (B).





5. Measure the resistance between the terminals of the solenoid.

Standard value: 33-39 Ohms at 20°C (68° F)

PULSED SECONDARY AIR INJECTION VALVE INSPECTION





1. Remove the pulsed secondary air injection valve.





2. Blow air at (A) and (B) side of the pulsed secondary air injection valve to check ventilation.