Well I actually have 2 problems. First is that I started up my car the other day and with the cold weather, the tunning is all off; I could barely get it started. When I finally managed to get it started, it was smoking alot. I tried leaning it out, and it would stall and I wasn't able to get it started until I richened it up again.

As I slowly got it moving, I heard some grinding noises. I had this problem before. I opened up the diffs which was OK, and made sure the mesh between the spur and clutch bell was OK. I have no idea where the grinding is coming from.

Any suggestions?