I have had my boat in the shop most of the summer and continue to put parts on and it still dies. They have replaced the fuel pump and surge pump. My feeling is the ECU.
Problem: Running down the lake the engine dies. After several minutes it starts and sometimes runs fine. Often it dies...
I have a '92 Mercury 150 EFI that suddenly dies. It runs great for a while and then suddenly shuts down. I have changed fuel filters and plugs. It does not matter if it is wide open or idling it just shuts down. If you wait a few minutes it starts up and runs fine. It is very ramdom. I may go...
