EL150 Dies, Immediately Restarts

[S.Wxman]

Looking for diagnostic help. 1995 E150ELEOM V6 w/ OIS Ignition System.

Not a high hour engine. Starts easily, runs great. On a Fish and Ski boat. Can sometimes go out and run for 2-3 hours pulling the tube/skiing without issue. Most times out, however, I will have at least one instance of the engine shutting down. This happens while running and/or while decelerating. The engine cuts off instantly without stumbling or any rough running. When it happens I can put in neutral and immediately restart without issue. Once in a while it will stop and 'recatch' before the prop stops windmilling.

I have had it in for service and they 'could not duplicate'. They did some basic tune-up items, including rebuilding two carbs. No real changes I could notice.
I am looking for some troubleshooting tips as I hate to take back in and leave for service here at the beginning of fishing season just to have another CND.

I think I will clean the tank and replace fuel pickup/lines, but I am sort of leaning toward electrical since it cuts out/dies instantly, without stumbling or coughing, and then immediately restarts without issue.

All help appreciated.

[boats.net]

Would be very hard to find if starts right back up. Just clean fuel system and check all grounds and wire connections on engine to see if helps.

[S.Wxman]

Good call on the grounds. I am also looking at the ignition switch. It is a 1995 OMC boat and has the separate ignition and kill switches. I find it harder to imagine a bad kill switch since open is run, but I can imagine the kill wire getting some spurious voltage spikes through the ignition switch. At least it is an easy and inexpensive place to start.

Thank you

[sclowrider]

I have a 1997 e35qle that does the exact same thing. been told it was power pack ,but I have a hard time believeing that. hopeing I can find a fix before wasting or spending 600 for that scenario.

[S.Wxman]

Well I spent a lot more than that taking it to two different Evinrude certified shops. I end up with 8 carb rebuilds, new fuel filter, new spark plugs (twice), new primer bulb....., the list goes on.
Neither time I took boat out after being worked on did I make it across lake once before the same thing happened.
I eventually got two manuals and troubleshot everything I could electrical. I never found anything wrong, so I replaced the PowerPack. Problem solved.
Good luck. I know it is a frustrating issue.

[sclowrider]

thx..guess may as well spend there first then...hopefully solve the first time...lol