i have a 2008 polaris 800 rzr a couple times over the summer ive had a miss to the engine about twice it was like it dropped to one cylender then after awhile it pickled back up and away i went then this lasat time i was out i went through a couple water spots that werte only 16 inches deep and it started to miss after running for awhile it picked back up and good then hit another hole and this time it dropped and never picked up i replaced the plugs it ran ok went out the other day it worked good till i got into some water again and back to same thing looking for ideas

 

i have an 08 rzr and my stupid brother never changed the air filter enough so we had grime and dirt in the top of the heads so we had to replace the pistons and everything make sure and chekc the air filter and check where the bike sucks in air because ours was really dirty and muddy.. its right between the seats up high where the bed starts... and try new plugs .

 

You have bad plug wires.

 

What he said.....

I'd check the connection to the ignition and make sure they're seated and sealed right.

 

They are not sealing right where they slip over the plugs. Water will stand in there shorting it out.

 

That would do it fo' sure.