Hi, and thanks in advance for any help, I need it!!! I have a Huskee lawn tractor that has ran flawless for years and years. Just today I had to jump start it with my car. It started and ran fine. I left it running and filled it with gas, while it was running. I then put it on high throttle and and put it in gear and it began blowing smoke out of the front end and its hard to tell where its coming from. It then quit on high throttle, while blowing smoke. I started it up and drove it around the yard at low throttle and it ran fine,it just kept blowing smoke out of the muffler. Then on high throttle, it quit. I checked the oil level and its fine. The majority of the issues seem to be with the muffler area..... Anyone have any ideas??? I'm really in a jam here.