Won't start - Compression?

[thunderhawk6630]

Saturday afternoon I took my S25 out in the snow and had a great time. Put about four tanks through it and then came inside to warm up. It was about 25 degrees outside. About 15 minutes later I try to fire it up again and it seems to struggle when turning over. I removed the glow plug and performed the procedure for when it's flooded, it wasn't. But the motor turns over just fine when the glow plug is out. When I tighten it back down, it struggles to turn over. If I back the glow plug out a half turn it turns over fine but still won't fire. It behaves somewhat like the engine is flooded, but it's not. Any help would be great.

 

[lifter37]

Check the muffler. Make sure fuel is not puddled up in muffler.

 

[thunderhawk6630]

I went ahead and disassembled the muffler and cleaned it. There was nothing in there. I put it in front of the heater on low for a couple hours to warm it it and evaporate any snow and moisture off and when I tried it again it worked just fine. Thanks for the reply.