What size gas line to use on 1988 Mercury 115 Horse 6cl

My gas line was changed last s

My gas line was changed last summer and since then I have been having trouble when I throttle up.When I throttle up fast it cuts out to a stall. (SOMETIMES) if I throttle up slow and steady it is fine. Any Ideas on my problem.
Thank You

"Terrance, That motor calls f

"Terrance, That motor calls for a 5/16" fuel line, however, I would use a 3/8" fuel line to be sure it gets enought fuel. As for your running issue, have someone pump the primer bulb at high speed, and see if the problem goes away. If the problem dissappears, make sure the fuel filters and screens are clean and the tank vent is open, and then rebuild the fuel pump.

If the problem persists, it is likely due to dirty or clogged carbs. These need to be removed, cleaned and new gaskets and inlet needles be installed and adjustment of the idle mixture."