start up trouble on 500efi
 

motor turns over no prob but stumbles and never really starts... if it does catch it does so for a few seconds and dies again... coil gone bad?? cap and rotor gone bad??? help!!!

HOWS YOUR FUEL PRESSURE??? when you turn the keys on do you hear the electric fuel pumps running??? when were the fuel/water sep. filters changed?? gotta prime them or they get air bound,,,

Is this the new boat you just got?
Like Scarab3DMC said.
Sounds like it's running out of fuel.

Check your injectors/and rest or fuel system.

when we ran it on the hose yesterday some water got in the motor and fuel filter... changed filter and blew out the rest... purrrs perfect now... the boats here but wont be mine until wednesday when we do all the paper and title stuff...:)

I wanted to bump this because I think I am having the same problem...

2000 HP500EFI
Runs for a bit then dies.. ... wait a few and starts for a few seconds and dies again. This just happened today . Ran just long enough to get it off the trailer and then died while docking.... Grrrrrr.... missed the poker run and the only nice boating day we've had for a month!

I replaced the water seperator but did not prime it.... .. does it HAVE to be primed? After that it started up and ran for a minute then died... checked the seperator for fuel and it was dry ...

I can hear the fuel pump buzz when I turn the key on ... I did this many times to try and prime the system ... finally got it to start again but it died ... this time the seperator was about 1/2 to 3/4 full of fuel..

So... think this is still a priming problem or is it a fuel pump issue?

Also.. should I change the filter just before the fuel rail on the back of the engine?

Thanks!