Hope this is the right place for help I’m a newbie. I bought a 02 jet boat with a 4.3 v6 EFI 2 stroke 240hp, previous owner said it had set for a year or so and I might need to service it before running it but the wife and I wanted to make sure we didn’t get screwed so be drove home and put it on the water. It fired right up and ran great for the first 30+ minutes or so, no missing or stalling want so ever! After docking it for maybe 5-10 minutes we fired it back up (no problems) and as we pushed off and went to throttle up it died instantly, fired back up, went to slowly take off again and died! Since we have had it out 2-3 other times with sea foam and new fuel and it does the exact same thing every time!! I took the in-line fuel filter off and it did have some a decent about of crud in it and I noticed the hose clamps that hold the rubber boot on that goes over the fuel tank hole where all the hoses and wires come out at where loose and I could pull the boot and all off fairly easily so I did tighten those thinking maybe it was sucking air but weird it will run great for the first short outing then go back to stalling! I have ordered new plugs, in line filter, and water/fuel separator but not sure that’s the problem. Any help would be very grateful and might keep me from a divorce lol!! Thanks