Hi.

My 97 wrx has been running on 3 cylinders for about a week and prior to this was running on 3 occasionaly but cleared after a mile or two. Now its done over 100miles and hasnt cleared.

I have so far changed the plugs, ht leads, coil pack and even the airflow meter (which needed replacing anyway) and it havent resolved the problem.

I posted a thread yday and was told to take the plugs off all 4 injectors one by one to see if it makes a difference to idle and i've now located the criminal cylinder !

Before i go ahead and buy some new injectors (Gd excuse to get some nice ones!) Can anyone offer any other advice of what could be causing the problem. If any !!

Thanks for your help !