Motor cuts off after running 20 min

[blacksoutback]

I have a 96 40hp force and my problem is that the motor starts fine at the beginning of the day and after running for about 2 miles and throttling bach the engine cuts off. I have changed the carb and it helped some. Previously the motor ran like a dream after a tune-up. My problems started after I was going at about 90% throttle and i trottled back and the engine stalled and would not start back, but after about 30 min or so the engine started again. this has been the case ever since. could someone give me an idea of what my problem might be? Thanks.

 

[roscoe]

Re: Motor cuts off after running 20 min

Welcome to iboats/

Next time you take it out, take a few tools along.
When the motor dies.
Check for spark on both cylinders.

Could be a weak coil, that drops its output when it gets hot.

 

[blacksoutback]

Re: Motor cuts off after running 20 min

Thanks i will. i had suspected something electrical. I will check this some time this week. Thank you.