So I have yet another problem. After rebuilding my carb and reinstalling it, the truck has run perfectly until now. Today after soccer, I was on my way home and about half way it started popping again. That progressed to backfiring in about thirty seconds, and then it would not idle at all. I finally got it back to my house where it got it to idle, and I heard a screaching sound from the engine. I think it was from the passenger's side of the engine bay, but I don't know for sure. After idiling for a minute, it started belching oil smoke?!?!?!? I am sure that it came out of the tailpipe, but the funny thing is that it smelled like burning rubber more than anything else. Any ideas guys? It ran perfectly until just two hours ago. What went wrong?