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Jan 23rd, 2013
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2013 Merc. 60 EFI, surging at high rpms. #13577140 05/31/20 01:09 PM
Joined: Jul 2003
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fisherman dan Offline OP
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My motor started surging at high rpms. When I bring back the throttle, it runs fine for a bit and then surges again only after its warmed up. I replaced plugs, checked wires and coils. All good. I replaced fuel filters, water/ fuel seperator and removed and cleaned some black debris from EV tank. High pressure fuel pump appears good. Problem still there, not as bad. Next, I will rebuild the low pressure fuel pump. TBD.
I hope this can be of use to someone.


Tight Lines!
God Bless
Re: 2013 Merc. 60 EFI, surging at high rpms. [Re: fisherman dan] #13577383 05/31/20 05:52 PM
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gary purdy Offline
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Have you replaced the fuel lines? Is this a 4 stroke?


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
Re: 2013 Merc. 60 EFI, surging at high rpms. [Re: fisherman dan] #13577525 05/31/20 08:46 PM
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fisherman dan Offline OP
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It is a four stroke. I removed the fuel supply line and checked it out. Did not see any issues.


Tight Lines!
God Bless
Re: 2013 Merc. 60 EFI, surging at high rpms. [Re: fisherman dan] #13577639 05/31/20 10:42 PM
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bronco71 Online Content
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Could be fuel filter/water separator...


1999 Triton TX21/225 Mercury Optimax
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