As the title says, I have a misfire on cylinder 1 at idle. It's a 1998 4.0 with 165k miles. I can feel slight vibrations while in the car and it is idling. I had this code a few months ago and changed the plugs, coil wires, distributor cap, and the distributor rotor and the problem went away until now. I tried clearing the code but it comes back within a few minutes. I did the screwdriver test on injector 1 and injector 2 and they sound pretty similar so at least the signal to the injector is okay, still need to test the actual injector. I do notice that it is harder to start now than before.
Today while diagnosing it, i noticed a weird puffing air noise coming from the exhaust I have not heard before. Any idea what this could be? It is only audible near the muffler and not near the engine see the attached video.
Today while diagnosing it, i noticed a weird puffing air noise coming from the exhaust I have not heard before. Any idea what this could be? It is only audible near the muffler and not near the engine see the attached video.