Going to go through all those things this Thursday. I rebuilt my motor about four years ago and cleaned all that stuff up so I'm not sure I'll find anything but at this point I need to try everything. The mileage has dropped and it smells like ass on star up. Today it almost didn't once and then started fine afterward. I remember last winter the mileage went down as well. I'm gonna clean the fuse panel, replace fuses, clean grounds, replace spark plugs and wires, and check for vacuum leaks. I did bounce around the motor with propane and got no results but I will pull and check them anyways. Just seems strange that two or three weeks ago everything was great and then this. I wish the computer would pull a code.