Hi

I have a mercruiser 350 MPI-95 with a new longblock. The engine started without any problems and I drow for 15-20 minutes. Then it just stopped, I started it again and drow for another few seconds then it died again. I started it again and drow for 5 minutes then I stopped for a cup of coffee. When I started the engine again it died after a few seconds. Then it wouldn't start. I got towed back to the port. At the port I tried to start it and it started directly.
What is the problem?
There was gas all the way to the fuelrails but I hade no tools to check the plugs.
//Martin