Anti-Afterburn Valve

1. Disconnect inlet hose from anti-afterburn valve.

Fig. 23 - Anti-afterburn Valve Test:

2. With engine idling, lightly hold finger over inlet hose opening, Fig. 23. This should not cause the engine speed to vary.

3. With finger lightly placed over inlet hose opening, increase engine speed and quickly release accelerator. Air should flow inward for 3 seconds. If air flows inward longer than 3 seconds, or if air does not flow inward at all, replace valve.