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Old 10-02-2018, 20:04   #1
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Join Date: Jan 2016
Location: Lake Macquarie NSW Australia
Boat: Jeanneau SO 389 37'
Posts: 8
Engine Not Starting

Boat: Jeanneau Sun Odyssey 389
Engine: Yanmar 3YM30AE
Yesterday I turned engine battery switch on before disconnecting shore power.
When I attempted to start the engine I pressed the Power button on the instrument panel and everything lit up like usual and I could hear the engine compartment fan blowing. But as soon as I press the start button the instrument panel goes blank and the engine doesn’t crank.

Engine Battery voltage is 13.1 V

All house electrics okay.

Thanks in advance for your help.
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Old 10-02-2018, 20:49   #2
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Join Date: Jan 2015
Location: SoCal
Boat: Formosa 30 ketch
Posts: 541
Re: Engine Not Starting

Usual reason:
Corroded battery terminals. Same as what happens with a car.
Get a battery brush and clean them up.
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Old 10-02-2018, 21:41   #3
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Location: canada
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Re: Engine Not Starting

shore power has nothing to do with it. you can start engine with shore power on. infact it will start better that way.

sounds like you have a bad connection that will allow enough power for the gauges but not cranking. you'll need a volt meter and a 2nd person to turn key as you trace votage between battery and start motor and key
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Old 10-02-2018, 22:05   #4
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Re: Engine Not Starting

Thanks for your reply
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