Got any Polaris RZR mechanics on here?

Not that I'm aware of. Just a key. And we went through that first. It's fine.

Compression was fine.

It's got fuel. Strong. Pump is practically new. Got changed with the tank.

Behold! I have stumped the Outdoor board.

Looks like I'm gonna have to freeze hell and take it to the polaris people to figure out their necromancy. This is against everything I claim to stand for in cool weather.

If your getting air, good fuel and a hot spark, it’s either timing or compression related. Disable the fuel pump and spray some starting fluid in the intake to see if it pops off. If it doesn’t start up, the next step is checking for a good spark and then running a compression check.

Yeah, I’d check the timing for sure. If it has the stock cam chain tensioner that works off of oil pressure it’s been known to cause the timing to jump, especially if someone hit the gas before the oil pressure built up. Mine would rattle for the first 15-20 seconds after starting so I put a mechanical one in it and fixed that. Mine was a fuel injected 900 rzr and the injectors got clogged after it sat up for a couple months. Started running bad and then wouldn’t start. When I pulled them out there wasn’t much flowing through them. I blew through the injectors with compressed air until they flowed. Started and ran fine after that. Not sure if blowing air through them is the best method but it worked for me.