New member here and need a little or lot of help on my m715, first off my truck has been setting a long time, I did get it cranked and it ran pretty decent , then began blowing off oil filters, I put another pump on it and when I cranked it it seemed out of time, I advanced the timing and got it running pretty good without any oil pump issues, drove it around the block and about halfway around it started backfiring and coughing back thru the carb, barely made it home and now it will spin over but will not crank , hope someone can help, don't have much hair left to pull out. It's the standard 230 tornado engine. Thanks