So I just purchased a low hr (148) Yamaha F90. Year 2005. It had been sitting for a couple years. I determined that the high pressure fuel pump was not working and replaced it. The motor starts easily now but will not stay running. With throttle only I can keep it running by pumping the throttle but it does not seem to like any one throttle position and dies if not touched. It will restart no problem just won’t stay running for any length of time. Any help would be greatly appreciated! Thank you
