1995 90hp 2 stroke out board problem starts runs for a while then stops

[surrfit]

Hello,
I have a 18' center console boat with a 90hp Merc outboard 1995 2 stroke and last weekend I was out on the water the engine was running fine for around 20 miles I had stopped several times to fish and the engine was starting fine one click then I tried after fishing a spot for a while and it would turn over real good but didn't start so I checked if I was getting fuel that looked good so I continued to try cranking the motor several times and it sounded like right when I turned the key off it was getting ready to start. I finally got it started and went about a mile and it just quit like I turned the key off, no sputtering like a fuel issue and it was nice and cool. I let it sit for about ten minutes to check fuses and connections then it started again and went about a mile then quit again. I called vessel assist and was towed back to the harbor. When got home I went to flush the motor and it started and ran for about 3 minutes and quit. I am not real strong on electrical problems so if this sounds like something you have experienced before or know what the problem might be please advise it would be very much appreciated,
Thanks in advance,
Jeff.

 

[enginepower]

If you not good in electronics, this may not help you but here it is. http://www.cdielectronics.com/support/ I had a very similar issue and it ended up being the bracket that all the electronics mount to was loose and I think that was causing it to lose a ground. Ran it about 3-4 outings after tightening it and that problem never happen again but then a new problem started. Lost spark to #1 cylinder and it ended up being a bad switch box. Not sure if the loose bracket was my problem or the switch box was just on it's way out but something easy to check.

 

[undone]

I replied to this earlier but some how it disappeared after I hit "post reply".

As the electronics heat up they are more likely to fail, so running for a short time and then stopping as if you turned the key off fits in with a failing switchbox. They tend to run for shorter periods of time before each failure until it will no longer work. It can be other things like the loose ground, but sometimes these loose grounds in the electronics can cause the switchbox to fail.