I have a 2007 60HP EFI Mercury outboard. The engine starts but stalls in less than 1 minute. The High pressure pump runs fine with battery test but when installed I get 12 volt power to the connection at run for a second and then nothing. The engine will start, run fine for less than a minute and stall. When I check the gas leaving the VST I only get a trickle. Why am I not getting power to the VST when motor is running?