Re: engine code "missfire" plz help!
I have a 90 Ranger 2.9L that is having about the same problem. I have changed the plugs, wires, dist cap, rotor, cleaned the throttle body and even
added a fuel injector cleaner but none of it has helped. I have been told to change the fuel filter which I will do this coming week. I checked the compression and it looked good, the same on all cylinders. I have also been told it could be a bad injector or cam lobe "flat-spotted". So if you figure yours out please post the answer and I will do the same