2021 250 Pro XS serial number 3B008967 Yesterday while fishing I started the motor and when I put it in gear and gave it gas to go on plane it backfired loudly twice so I shut it down restarted it and when I gave it gas it did it again and went down to idle so it shut it off and trolled back to the ramp and loaded it onto the trailer with out starting the motor again. My dealer is closed on Monday. Never had this happen before so just trying to figure what may be happening.