Hi i've just bought my very first Mazda and i must say i'm very
impressed with the overal quality of the car, it's getting on for 14
years old but apart from a few patches of rust on the rear wheel arches
the sunroof and the aircon not working it's perfect. Anyway my first
question is when should i be changing the cambelt the car has 90000 on
the clock and i guess it must be soon, the other thing is the aircon, i
would like it to work but as the car only cost me a couple of hundred i
don't want to shell out too much, so can someone give me some advice as
to the common problems and anything that i can check or do myself to
diagnose the problem.

Any help will be apreciated thanks.