I have a MY 2003 STI PPP, it is using more fuel than usual and feels and sounds as if it may be running on 3 cylinders, it feels as if its holding back until the turbo get going, it is not starting as good as it should do either,

I have changed the plugs for new ones and out of the ones that came out 1 was a bit sooty. I have also cleaned the MAF sensor.

If one of the coilpacks is faulty would these be the symptoms? and would a dealer workshop be able to pick this up on a diagnostics computer?

cheers

 

I think that I may be having the same problem on my 2000 Wagon. Sort of fades and hessitates a bit under acceleration.
Anybody got any ideas?
Ooh, and what the hell is a MAF and where do you find it?

 

dip the oil...is there a smell of petrol from it? then its possibly(hope it aint) ur piston that has gone..


MAF : hav u got an induction airfilter panel or cone? the pipework its connected to, see theres a box shape with a green label on it..MAF