3 has a part to play in 5 and 2 so fix that to start with.
For 2, what year and injecion/carb does the car have? Is the hot flapper stiil in place? Is cold 0 degrees or 10??
1 sounds like play in the steering bits but not at all sure where to look first.
4, no idea, cable all the way baby!
6, send them to @jonbot
and he willl have their corpses feasted upon by ravens. :-P