No Air Supply
- Start engine and raise speed to 1500 RPM. Check air supply at rubber hoses. If air supply increases with RPM, air pump operation is okay. If air pump is okay, check for leakage at hoses and fittings. Repair or replace as necessary.
- If hoses are okay, check diverter valve for leakage. If air is expelled through diverter exhaust with vehicle at idle, replace valve. If diverter valve is okay, remove check valve. Blow air through check valve in direction of air pump. Air should not pass through. Blow air through opposite direction. Air should pass freely.