out of the blue wont start

[mark therrien]

I have a johnson 2000 50 hp j50plssm starts when cold no choke runs good. After fishing stating and stopping all is fine then out of the blue it just cranks won't start even with choke. I get it home turn key and it starts right up and its done this many times.I had the carbs professionally cleaned,new plugs,fuel lines and use fuel additive all the time. ?

[Boobie]

When it acts up, check your spark with a spark tester. It should jump a 7/16" open air gap on a spark tester.

[mark therrien]

So what do you think Boobie could it be the coil. Could it go from good to bad and back to good

[Boobie]

Yes, a coil can do that. Also a power pack.