Aspirator Air System: Testing

The aspirator valve is not repairable. If the valve fails, it must be replaced. Check all connections for proper assembly. If leakage is noted at any joints, repair before testing valve.

To test aspirator valve, disconnect hose from aspirator inlet. With engine idling in neutral, vacuum exhaust pulses should be felt at the aspirator inlet. If hot exhaust gas is escaping from the inlet, the valve is defective and must be replaced.