Had to take the primers off the 89 Arctic cat and 97 Ski Doo and prime them before they would prime the motors and start. Then they worked great. I need to find a t fitting or something so I can do it without taking the primer off to get it to take fuel. But it shouldn't be an issue until they sit for the summer next year. Bought both primers last year and they had no issues all winter. Now I'm ready for more snow. Time to pull out the King Cat 900 with a bad driveshaft bearing and get it going. It's EFI with Twin Pipes and starts right up so I'm motivated to get it rideable too.