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Dec 30th, 2023
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 Mercury EFI 200
#11624991
05/25/16 01:39 PM
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Joined: Apr 2013
Posts: 195
The Lab
OP
Outdoorsman
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OP
Outdoorsman
Joined: Apr 2013
Posts: 195 |
Hello, recently started having problems with my Mercury Efi 200. After the motor warms up it seems to start idling very very rough. It just started doing this. Any suggestions? Anyone know where to start so I can get it taken care of?
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Re: Mercury EFI 200
[Re: The Lab]
#11625220
05/25/16 02:54 PM
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Joined: Apr 2013
Posts: 378
Todd Ivins
Angler
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Angler
Joined: Apr 2013
Posts: 378 |
Ethanol problems most likely. gas lines et al need to be examined too. I gather its a 96 model?
"My Dad taught me how fish relate to structure....he left out how women relate to fishing."
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Re: Mercury EFI 200
[Re: The Lab]
#11625510
05/25/16 04:41 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
check your spark plugs too
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Re: Mercury EFI 200
[Re: The Lab]
#11625798
05/25/16 06:18 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
Check the temp sender wire`s connection`s. Brown/white stripe top port cylinder head.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: Mercury EFI 200
[Re: The Lab]
#11631640
05/28/16 05:50 AM
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Joined: Dec 2012
Posts: 359
Okyakfishing
Angler
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Angler
Joined: Dec 2012
Posts: 359 |
My 200 EFI did the same thing and it was the idle screw was loose and then it actually fell out. Mechanic found it laying inside the motor. Replaced and problem went away.
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