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Engine Technical Discussion This is our non outboard engine related technical discussion forum. If your boat is powered by a Inboard/Outboard, Jet drive, V-drive, or even something else, then this is the forum for you! Topics include engine repair and maintenance, modifications, drives and gearcases, electrical and electronics, etc. For technical assistance related to outboards, please use our outboard tech forum.

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Old 07-06-2017, 10:32 PM   #1
DRS911
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Default 454 Mercruiser will not hot start

PLEASE HELP !! I Have a 1994 219 Persuader, Starts fine on cold start but after running her for awhile she will not re-start. She wants to, but will not. I've left the blower on, opened the hatch to cool of the engine compartment, but she still will not start. Vapor Lock ?? Coil, Distributor Cap, Rotor ?? Does anyone know how or what the issue is and how to correct it?? Thank you in advance
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Old 07-07-2017, 10:11 AM   #2
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Investigate Mercury Marine Service Bulletin concerning vapor lock and 'winter grade' fuels. Alcohol, good in some ways (Southern Comfort), bad in others...
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Old 07-07-2017, 11:20 AM   #3
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Sounds like your timing is advanced to far.
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Old 07-07-2017, 11:36 AM   #4
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Quote:
Originally Posted by miller View Post
Sounds like your timing is advanced to far.
Ya beat me to it. Check your timing when it's cold and make sure it's set to Merc spec.
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Old 07-07-2017, 02:03 PM   #5
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Does it crank over at the same speed cold or hot?
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Old 07-09-2017, 06:03 AM   #6
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Sometimes it does,Just will not fire
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Old 07-13-2017, 09:05 PM   #7
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Does it have spark while cranking when it doesn't start?
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