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Engine Shutoff at Idle

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Old Mar 9, 2020 | 10:12 AM
  #1  
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Helicopter
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From: Georgia
Default Engine Shutoff at Idle

Hi All;
The old Lexy started shutting off when at idle (like when at traffic light). Above idle RPM is seems to run smooth enough (I don't think it is miss firing any cylinders).
If it gets below 1000 RPM the engine quickly quits.

Any ideas?

TNX
Roy
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Old Mar 9, 2020 | 08:34 PM
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Could it be the Idle Air Control Valve?
It doesn't look like an easy test to see if it is operational.

Roy
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Old Mar 11, 2020 | 10:10 AM
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The mx manual says that idle speed is pre-set and should not need to be changed. So there must be a problem somewhere in the idle system.
Here is a pix, Notice that the throttle cable is slack. Could that be part of the prob.? I never noticed before that is was slack.

Roy

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Old Jul 23, 2020 | 02:08 PM
  #4  
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From: Georgia
Default Fixed !!!!!

It was the Idle Air Control Valve. Cleaned it with help of tutorial on YouTube. Carburetor Cleaners and old tooth brush.


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