Cranking but not starting

[supr3me]

The other day my 2013 Polaris RZR 800 EFI motor locked up on me and after finally getting it freed, i thought i was in the clear. But now it just cranks without firing. I've checked the fuel pressure, it's all good. I put in new spark plugs and I can see the valves opening and closing like they should. Still no luck getting it to start. Has anyone else run into this before? I could really use some advice on where to look next.

 

[dark system]

That sounds frustrating, @supr3me. Since you already confirmed fuel and spark, you should definitely check the crank position sensor or timing because a bad signal there will make it crank all day without firing.