Engine dies when rapidly closing throttle

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   My engine tends to die when I close the throttle suddenly - like when maneuvering at low speed to dock and having to quickly shift from forward into reverse. Searching the web suggests that:Idle speed is too low. But in gear idle is around 650, and neutral around 800, which I think is about right. I recently cleaned the carb and set idle at max vacuum etc.
Carb is running too rich. Apparently rapidly closing the throttle cuts off air supply to the engine, creating a temporary rich condition in the intake. Carb is stock standard, so only adjustment to lean it out would be float level I guess.
Any thoughts on the above? Anything else that could be causing this?

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Wilhelm Hertzog Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Senior Member Joined: June-14-2014 Location: Cape Town Status: Offline Points: 336	Post Options Post Reply Quote Wilhelm Hertzog Report Post Thanks(0) Quote Reply Topic: Engine dies when rapidly closing throttle Posted: Today at 9:32am
	My engine tends to die when I close the throttle suddenly - like when maneuvering at low speed to dock and having to quickly shift from forward into reverse. Searching the web suggests that: Idle speed is too low. But in gear idle is around 650, and neutral around 800, which I think is about right. I recently cleaned the carb and set idle at max vacuum etc. Carb is running too rich. Apparently rapidly closing the throttle cuts off air supply to the engine, creating a temporary rich condition in the intake. Carb is stock standard, so only adjustment to lean it out would be float level I guess. Any thoughts on the above? Anything else that could be causing this?
	1982 Ski Nautique PCM351W RR II Velvet Drive 10-17-003 1:1 II PerfectPass Stargazer Do not go gentle into that good night. Rage, rage against the dying of the light.

Engine dies when rapidly closing throttle

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