you could use a scan tool to set the oil pump prime sequence and make sure its working or use the throttle lever with key on and put it in break in mode which will tell it to prime
Not too many boat owners in my friends circle wife would like to meet up and hang out with others on the illinois river we frequent the morris pool there we have an 01 utopia
like i said unplug all of them except one key it on you should hear the pump turn on at key on engine off. do this for all three if you find one not working then thats the pump your chasing check for power and ground at connector with good test light if you have good power and ground replace pump
there is a lift pump low pressure pump and a high pressure pump the lift pump is the first then the low pressure pump, those are both external mounted pumps after that theres a high pressure pump internal to the vst tank
key the engine on and unplug all fuel pumps but one make sure they are all turning on they should all prime had a similar issue found my low pressure fuel pump wasnt working
One more thing to check is to make sure all of your fuel pumps are turning on when key on engine off I found a bad low pressure pump in my boat would start and idle great couldn't get it above 3k rpms though without that pump
its tough to say a good compression test will tell you the general state of the powerhead along with a good plug reading. bog could be fuel or air pressure
running without gas cap will tell you if its a venting issue though
in order to verify the integrity of your gauge and wiring unlpug the lead form the sender on the tank if you ground the lead it should show empty if i recall and if you unplug it gauge should show full if gauge does not move when you do this fault is likely in the gauge but to be safe check the...