Mercury 60hp four stroke efi Bigfoot

by Bruce Murphy
(Winfield, Tennessee, USA)

Engine starts without hesitation. After you shift into forward, it accelerates as it should. Ater it runs at full throttle for a few minutes, the RPMs start noiceably dropping and the engine sputters until it reaches about 20% or so. If you reduce the throttle all the way, it responds until it gets back up to about 20%. It seems to run steady at low throttle;but, it you attempt to give it more throttle, it starts sputtering.


If you shift into neutral, turn off the motor and restart, it will repeat the aforementioned symptoms.

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Oct 28, 2020
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2010 25hp Mercury 4 stroke
by: Mike

I have the same problems with my Mercury 25hp. I've cleaned the fuel filter, new fuel lines, replaced gas tanks thinking it was something wrong with the fuel system. Now I am thinking it is not running on all cylinders. Did you fix your problem?

Aug 29, 2020
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60HP MERC Big Foot
by: Bob R

Engine does NOT stall....the OPPOSITE....it REVS VERY HIGH...and I need to turn off the key.. WHY??

Aug 29, 2020
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50hp mercury 500
by: Anonymous

Same problem did you guys Figure it out. Blahutakuba@gmail.com Thanks

Aug 29, 2020
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60HP Merc (2017) REVS Widely when doing slow turns
by: Bob R

On a Bass Pro pontoon... when starting motor (60hp Big Foot) and then turning slowly into or out of slip, engines REVS WIDELY...!! WHY? It's ONLY when I am moving slowly, and in a turn...Is it a LINKAGE problem?

would really like to hear from somebody on this.

Thanks. bobriegel@yahoo.com

Aug 17, 2020
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Same issues
by: Anonymous

I’ve had similar issues with mine, did you figure out what the problem was?

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