2006 mercury 50 hp 2 cycle

by Jeff

Runs and starts great then after running 30 minutes running full throttle top cylinder shuts down and rpms drop from 5500 to 3000. Then i let it sit for awhile and all three pistons kick in and it srarts working. Ive replaced coils register and lift or fuel pump. I have cleaned carburetor. What the crap is it. Fuel connections are good. Very puzzled

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