Update: 1985 mercury 50hp runs but surges at WOT

[kschauss]

Please bear with me me as this is my first post. I have a 50hp 2 stroke that is surging or acting like it is fuel starved at WOT. If I squeeze the primer bulb it will run with out an issue for about a minute. It will also run in netrual at full rmp. I havereplaced the plugs rebuilt carbs, checked compression 120 across a four, replaced fuel line, tank, and cleaned internal lines. The I have also checked timing and idol mix as well as check spark.

I am stumped but am also to stuborn to bring it to the shop and with a new baby in the house can scarcly affordable it and my wife is running out of patientance.

Any help would be greatly appreciated

UPDATE:
I was going through the manual and started checking the electrical side and got a high reading on the strator blue and blue wht wires could this be the cause of the surging at WOT?

[bhile]

Never run your motor at WOT in neutral. Double check all your fuel lines, primer bulb and connections for cracks. If all that is good rebuild your fuel pump.

[kschauss]

the pumps are integrated into the carbs and use a diaphragm I have replaced a rebuilt the intended twice. R
The internal lines are solid and the line to the engine is new as is the primer bulb

[MassillonBuckeye]

Your Venturi intact? Ehh, nevermind. Your carb doesnt have one.

[kschauss]

Please see update with stator

[gravitysgone]

Please see update with stator

I had the same problem, complete with new baby and frustrated wife. I took the carbs back off and reset the floats lower and that seems to have fixed it. my manual did not cover my exact carb, so the first time was a guess. I set the float as low as it would go and not leak out the overflow. I got a good tip on here to hook your carb right up to the tank line and pump it up to make sure it doesn't leak before installing it. I don't really know what I'm doing so take that with a grain of salt.