Well not exactly sure what I have done now. Was trying to dig out a limestone foundation with my Bobcat today and now I am stuck. The bobcat was at a steep decline nose first. I had bucket full of clay and limestone and could not go forward or back. I could not lift the bucket up to get myself out and was sitting like this for a few minutes trying to get out. All of a sudden the motor started idling faster and it sounded like the motor started knocking. When I turned the key off the bobcat kept running. When I turned the key all the way to the left position (pressure relief position) it finally quit. I had to go out the back window in order to get out. I had my nieghber over with his tractor but could not pull it out. He is going to bring over his bobcat tomorrow and dig my bucket out and then try and pull me out. My question is did I loose oil pressure because the bobcat was sitting at such a steep angle. My neighber thinks it might just be that it ran out of fuel. It was down to a 1/4 of a tank. I sure hope I didn't hurt the motor. It has a 83 horse Duetz. Any ideas?