Hello, I am new to the site and looking for advice with my wheeler, I hope I am writing this in the correct spot on the website. I bought the wheeler last fall (2015) and it ran great. The only reason I bought such an old machine is I have seen 3 of these machines from when I was a kid take a beating and all 3 of them still run fine to this day. The day I bought it the previous owner fired it right up after it had been sitting outside all night in 30 degree weather. I probably rode it 5-6 times after that day before storing it for the winter. It started and ran great each time. 2 weeks ago (early April 2016) I go to start it, it was one the mid 30s for temperature, it won’t start for nothing. I pushed it into the shop where it was warm and tried again about an hour later and still nothing. I took the plug out and had a nice blue spark. I figured it wasn’t getting gas so I put a little gas in the cylinder and still nothing, although it did back fire twice as I was trying to start it. Not being much of a gear head and not knowing what else to do at that point I went and got a new plug (the one I took out of it looked like the original, so this leads me to believe the last owner wasn’t dealing with this issue) and put it in and it fired right up running just like it did last fall, pretty much perfect. I thought I was in the clear but I’ve put less than an hour on the machine since then and now the plug is fouled again. It did look oily when I took it out (as did the first one I replaced). The only input I have received so far is that it may be a stuck piston ring but that is the only theory I have as of right now. I know that this is a lengthy post I have written and probably pointless to most but I do want the best advice possible. Anyone with any good advice it is much appreciated since I am not much of a mechanic! Thank you and have a good day.