hi all,
My problem with my 1993 Mazda 929 is that the engine is very rough and loss of power. idleing and running and all the time. i changed my cap, wires, plugs and it is still the same. I read some other posts and they some say that they found one fuel injector bad, if that is the case how do i find out which injetor is bad?. is that my problem too? also some smoke also comes out of my exhaust. can it also be a leaking vacuum line? if so any ideas which one? any help would be greatly appreicated THANKS