Started the Viper and moved it this morning to get another one out of the trailer. When we were ready to go 10 minutes later the sled wouldn't start, just crank but not fire. Tried turning the key off and back on, flipping the gas, moving the kill switch (which I never use). After about 10 minutes of trying to start it, and moving the kill switch back and forth several times we heard the fuel pump and then it started. Everything was fine the rest of the day.