Pulsed Secondary Air Injection: Testing and Inspection

Fig. 5 Pulse air feed system diagram:

PULSE AIR FEEDER SYSTEM

1. Remove the hose connected to the air cleaner and check the vacuum generated by placing a small sheet of metal over the end of the hose while the engine is running.
2. If no vacuum is present inspect the hoses for damage and signs of oil leaks.
3. Repair or replace as necessary and re-test.