I have had my new boat for about 3 weeks now (1995 Mainship 37) and love it.
The engines are Marine Power 454's with 140 psi on all cylinders and about 900 hours. Throttle body fuel injection and electric fuel pump.
These engines start and run great although prior owner had financial issues and had let the fuel get to near zero (I think - fuel guage does not work).
After putting in lots of fuel and cleaning out the fuel filters it has run very well.
My issue has occurred when we go for an evening cruise and anchor for an hour or two. The starboard engine starts immediately but the port will not start at all.
The first time it happened I went back to the marina the next day and it started right up and ran great.
It happened again the next night and I finally got it restarted before I had to dock.
Engine cranks, seems like it gets fuel to cough for a few seconds and then it just cranks but no start.
I would appreciate any guidance that might be available.
It certainly feels like a fuel issue and I wonder about the fuel pump.
Almost forgot, this boat has a single fuel tank for both engines.