At Full throttle engine dies. 150HP Force 1992?

Could also be your fuel lines - they are doubled layered lines, when they get old, the inner and outer line can break away from eachother - when you are going full throttle the inner line could suck into itself (since it no longer has the outer line to keep it in its correct shape- cutting the gas flow to the motor - replace the fuel lines (which is very cheap to do)