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Max Online: 36273 @ 01/23/13 02:34 PM
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#12483902 - 10/29/17 11:53 PM Mercury 200efi hesitating
E-bright Offline

Registered: 12/05/13
Posts: 273
Loc: Eagle Mountain
2001 merc efi is hesitating and will run on high rpms. Is it time for a new fuel filter?

#12483979 - 10/30/17 01:54 AM Re: Mercury 200efi hesitating [Re: E-bright]
Gamblinman Online   content
TFF Team Angler

Registered: 11/26/02
Posts: 3632
Loc: Yantis, TX
Possibly. When was the last time it was changed? When was the last time that you replaced all the fuel lines and primer bulb?

With todays ethanol laced fuels, all these items become regular maintenance items. Fuel filter/separator annually. Fuel lines and primer bulb every 2 years, at a minimum.

#12484198 - 10/30/17 09:37 AM Re: Mercury 200efi hesitating [Re: E-bright]
boocat Offline
Extreme Angler

Registered: 07/30/12
Posts: 1215
Loc: Hill Country
Mine started doing that. I changed the motor mounted filter and added a racor between the bulb and tank. The fuel in the bowl of the stock filter looked kinda bad when I poured it in a clear glass, have not had it back out yet to see if it worked.

#12485911 - 10/31/17 12:13 PM Re: Mercury 200efi hesitating [Re: E-bright]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11468
Loc: Littlefield Tx & Lake A. H. US...
First sign of restricted fuel is surging. I would lean more towards old or bad fuel. We always see some problems when the fuel supply is changing from one season to another. You could have gotten a big dose of ethanol. Had a boat this time last year that the fuel tested 35%. Was doing the same hesitation and would finally get up on plane and run fair.

Edited by gary purdy (11/01/17 08:45 AM)
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

#12486055 - 10/31/17 01:47 PM Re: Mercury 200efi hesitating [Re: E-bright]
SteezMacQueen Online   sleepy
TFF Celebrity

Registered: 11/02/14
Posts: 6038
Loc: Red Oak, Galveston, and Pagosa...
Injectors need cleaning, or plugs need changing....or both.
Eat. Sleep. Fish.


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