PA-30 Engine idles at mixture cutoff

PA-30 Engine idles at mixture cutoff

Postby Frank Brunot » Mon Oct 27, 2014 7:33 pm

I've got an engine on my PA-30 that won't shutdown at Mixture Idle Cutoff. Other than the cutoff leakage test described in the Bendix Troubleshooting Manual,
has anyone got any other tests or adjustments they could recommend? This happened all of a sudden after a flight last week. Injectors were overhauled about 18 months ago.
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Re: PA-30 Engine idles at mixture cutoff

Postby Clarence Beintema » Mon Oct 27, 2014 8:20 pm

Poor shut down at ICO is sometimes a sticking plunger in the fuel flow divider. Switch them from left to right engine to help troubleshooting.

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Re: PA-30 Engine idles at mixture cutoff

Postby Frank Brunot » Wed Oct 29, 2014 2:46 am

Thanks all. I ran the cutoff leakage test, and fuel was really flowing in cutoff position. Now need to find out why, when they repair the unit.
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