Engine won't shut down

by James Ginther in 912 / 914 Technical Questions 11 years ago

I have a 2002 912 UL; the engine will not shut down when the ignition switch is turned fully off. I have had to use the choke to kill the engine.

I have checked basic wire connections and found nothing unusual.

Anyone have experience with this problem? Are there specific things I can check to locate the problem?

Thanks,

James

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Re: Engine won't shut down

by bill martin » 11 years ago

bill martin

10 757 0

James,

Sounds like you have a loose ground wire or bad mag switch. Does the engine lose some RPMs when you turn the switch fully off? About the same as a mag check drop? If so, it is probably one module that is not being grounded when switched off. You might also try unplugging and replugging the module plugs. A bad connection there can cause a loss of grounding.

Bill.

Thank you said by: James Ginther

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Re: Engine won't shut down

by Roger Lee » 11 years ago

Roger Lee

128 5.28k 4.98k

Im with Biil,
Check the two ground wires that go into your ignition switch. They may be loose or come off. It may be where the ground wire(s) are attached up at the module plugs too.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Thank you said by: James Ginther

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Re: Engine won't shut down

by MARK JACKSON » 11 years ago

MARK JACKSON

12 332 11

I will bet what ever you like that it is the grounding wire on the modules.

The outer sheath will look ok, but the inner wire will be broken.

Pull the wires gently and they will stretch.

Mark

Thank you said by: James Ginther

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Re: Engine won't shut down

by James Ginther » 11 years ago

James Ginther

2 4 0

Thanks for the tips. I will follow your suggestions and let you know what I find.

James

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Re: Engine won't shut down

by James Ginther » 11 years ago

James Ginther

2 4 0

Haven't found it yet. Wires look to be intact. What to check with a multimeter?

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Engine won't shut down

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