Spinning but not catching?

[00.warrior350]

I recently purchased a 1991 yamaha warrior. I replaced the timing chain and timing chain tensioner. Once I started it, it ran fine for about 30 seconds then it cut off. When I tried starting it again the crank just spins and spins almost like it's not catching. Does anyone know what might be causing this? The one way seemed fine when put back on. Thank you in advance for the help.
View attachment 20241031_151139.mp4

 

[beastlywarrior228]

Sounds like no compression.

 

[00.warrior350]

Sounds like no compression.

Could that be from a bad top end? It was smoking quite a bit when I had it running

 

[beastlywarrior228]

Yeah or you bent a valve

 

[00.warrior350]

Yeah or you bent a valve

I adjusted the valves before I started it and they looked fine. And what sucks is that the guy who sold ot to me said that he just put a new top end in it. Anyways thanks for the help

 

[PineyPower]

Check your flywheel keyway didbt break or strip, the timing marks will look ok but the marks won't be clocked to the crank correctly

 

[00.warrior350]

Check your flywheel keyway didbt break or strip, the timing marks will look ok but the marks won't be clocked to the crank correctly

Ill check the flywheel key. Thank you