warrior was running then died...please help

[cpitchfo]

First off thanks for all the general info your site has provided.

I recently took my warrior,I got on a trade, for a ride for the first time. Was riding it for a few hours and it was fine, the next day rode abour about an hours or so and then it died. My friend was riding it and said it started to sound like it was running out of gas then just quit. We towed it back with a truck and it was only run when given full throttle then would die as soon as you let off the thorottle. We checked spark and fuel..both were good. Got home and hooked up the compression tester and it pulled 60, before I left it was 130. Could it just be the rings? Im new to 4 strokes so any help would be great. Thanks

 

[zacusnyr]

With half the compression lost, you should definately tear apart the top-end. You either have a stuck/broken valve or the piston/rings are shot.

 

[cpitchfo]

thanks ill check that out, i think the valves were both ok, so next will be the rings