Deceleration Valve: Testing and Inspection

1. Check all hoses for pinholes, cracks or damage. Replace if necessary.
2. Start engine and allow to reach normal operating temperatures.

Fig. 9 Checking Mixture Control Valve Operation:

3. Disconnect hose (1), Fig. 9, then reconnect hose. Ensure air is drawn into MCV. At this time, engine will idle rough or die. This is normal.

Fig. 10 Checking Jet Operation:

4. Remove jet, Fig. 10, then blow air into pipe (1) and ensure air comes out pipe (2). If not, replace jet.