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Max Online: 36273 @ 01/23/13 02:34 PM
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#11868571 - 10/06/16 08:33 PM Mercury 200 efi running hot
Badbassdad Offline
Green Horn

Registered: 08/30/16
Posts: 17
Loc: Fort Worth TX.
I have a 97 mercury 200 efi, I have had it for 6 weeks. it runs great when we get it off the trailer and get on plane... but after a couple of runs it "bogs" down... only gets to about 2k rpm.. and hesitates... for a few minutes and then goes back and forth... alarm works when we turn the key on but no beeps after we get going... I dont know what it is...

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#11868634 - 10/06/16 09:26 PM Re: Mercury 200 efi running hot [Re: Badbassdad]
rongleaves Online   content
Outdoorsman

Registered: 05/17/16
Posts: 137
Loc: Sunnyvale,Tx
Completely misread this post.....sorry, my comment was totally irrelevant.


Edited by rongleaves (10/07/16 11:08 PM)

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#11868707 - 10/06/16 11:16 PM Re: Mercury 200 efi running hot [Re: Badbassdad]
Curtbass Online   content
Pro Angler

Registered: 04/17/15
Posts: 626
Loc: Grand Prairie, Tx
When's the last time thermostats were replaced? Poppet valve? Water pump impeller? I've got a guru Merc mechanic if you want to pm me. Just rebuilt my 94' 2.5 200 Efi...

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#11868929 - 10/07/16 08:33 AM Re: Mercury 200 efi running hot [Re: Badbassdad]
boatman025 Offline
Angler

Registered: 07/16/10
Posts: 421
Loc: McKinney
I could look at it for you Im on west side of McKinney
_________________________
Hughes Marine Service
McKinney ,Texas

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#11870228 - 10/07/16 08:33 PM Re: Mercury 200 efi running hot [Re: Badbassdad]
OPTI Offline
Extreme Angler

Registered: 06/23/04
Posts: 1348
Loc: Benbrook Tex
Possible ignition problem. Switch box or trigger you say it goes back and fourth is a gradual or instant change if gradual it is a fuel problem and if it is a instant change it is ignition.If it was a heat problem you would get a warning and if it was heat it would bog down till it quit running and it would not pick up and run if it was heat. One other thing if you have a gray fuel line running to engine the inner liner could be collapsing and blocking fuel flow.....OPTI


Edited by OPTI (10/07/16 08:34 PM)
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