05 trx250ex stock. We were riding through some mud and about 30 mins later it shut off on us. Took the carb apart at home and cleaned, bought a new plug as it was super old, and checked for spark, which I have. Just not starting.
Took out plug and cranked pushes out pretty good but Waiting on a friend to bring the tester from his dads. He was saying maybe weak spark but when we crank with a separate plug I have you can see an arc against the block. Tried starter fluid too nothing just cranks over.