Please help me locate and fix our 60hp mercury marine motor

[Bobswife]

Have had it in the shop twice with no luck...
the motor shuts off at full throttle around the same distance away from our property and does not crank back...(sometimes for days) which results in trolley motor and paddle back to dock....
everything fuel wise has been done ...even a new ignition switch installed.....we are depleted on the high labor cost with no results in fixing its problem.....where could we start in order to resolve this issue? Please help!!!!

 

[racerone]

Post a serial number.

 

[Silvertip]

What you have not apparently done is determined whether it is lack of fuel, lack of spark, or both that's causing the issue. What do the plugs look like? Does it have spark on all cylinders? Is the alarm system working? Is the oil injection system working? Have you done a compression test? Do you have a good starting battery? Stop buying parts and start doing some diagnosis. If you've had it to "the shop" twice and they can't make it run, you need a "new shop" (or at least a better mechanic/technician).

 

[Bobswife]

Yes all that has been done ...its been ruled out of being fuel related....apparently it only does its misbehaiving on the water...i called the boat shop back after we put it in the water and it did the same thing...he said maybe coils ,electrical or sader but saders usually just quit....ours runs for a short distance ( about 1/2 mile) then just shuts off and want start back . . Sometimes for a few days.....mechanic suggested we bring it back but gahh he had it a mth ....i thought i might reach out and research these forums to find solutions....
we would love to enjoy water activities with our family a little this summer....

 

[Bobswife]

As soon as i go back down to boat location...ill get serial numbers to post ...if that would help narrow the salution .....