92 2-cycle Confusing Issues

[tguellich]

I learned all I know from this site and it has served my cart so well. But I have recently hit a wall. The cart was running great in the winter and I had taken 2 friends out for a ride. After about 10 minutes she sputtered to a stop. Would still turn over fine, just no go. Got it home and started looking into it. It had been years since I did much work to it so right off the bat I replaced fuel filter, fuel pump, HEI module, coil, and plug. Still the same result.

1 - I put a spark tester on it and it is a strong initial spark then no spark at all. What could that be?

2 - I have the air filter off the carb and I am not smelling a ton of gas nor is there any on the plug.

I just can't tell if this is a spark issue, a fuel issue, or something else. Any ideas where I need to look with this thing? I was thinking of a carb cleaning as I haven't done it in 5 years or so since I bought the new carb. But after that I am totally confused.