1989 Cherokee 4.0, 200K miles
Just started running rough one day, like running on 5 cylinders.
I pulled off the fuel injector plugs one at a time, and all resulted in worse running except cylinder #6, which gave no change in performance. I used a stethoscope at each fuel injector to find clicking on all cylinders, so the solenoids must be operating. And it does have spark at cylinder #6.
Does this mean it must be a plugged-up fuel injector on #6?
Just started running rough one day, like running on 5 cylinders.
I pulled off the fuel injector plugs one at a time, and all resulted in worse running except cylinder #6, which gave no change in performance. I used a stethoscope at each fuel injector to find clicking on all cylinders, so the solenoids must be operating. And it does have spark at cylinder #6.
Does this mean it must be a plugged-up fuel injector on #6?