mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Air Check Valve/Pulse Air Valve|Page 3366 > < Air Check Valve/Pulse Air Valve
Page 1
background image

Air Injection Check Valve: Testing and Inspection
Anti-Backfire Gulp Valve

1. Disconnect the air supply hose from the air pump side of the valve (Fig. 1).

2. Observe the valve pintle by looking inside the valve through the disconnected port. Accelerate the engine to approximately 3000 rpm, suddenly
release the throttle, the pintle should be open and then close.

Air Check Valve/Pulse Air Valve|Page 3366 > < Air Check Valve/Pulse Air Valve