Hey guys, looking for a little advice. Have been having a misfire on cylinder #4, it started out only occuring every once in a while, and progressively got worse. When it first started out, it would only happen when I wanted to accelerate quickly and the car would hesistate/jerk, but would go away once I let off the gas pedal. It has progressively gotten worse from that point. Occasionally would occur on a cold start but turning off the ignition and restarting the vehicle would fix it. Now not so lucky. I figured at 80K miles I was due for new plugs and coil packs anyway, so I thought that was my problem. I just repalced the coil packs and plugs, (Bosch plugs and Bosch coils packs). I torqued everything to specs, and figured I was good. Started the car and the misfire is still there, cylinder #4. I checked the wires and connectors going into the coil pack, everything looks good. I looked at the old spark plugs and did not see anything out the ordinary or any fouling. At this point I am thinking perhaps a bad injector? My next step is going to swap out injectors with another cylinder and see if the misfire follows that injector. I have never done an injector but doesn't look that difficult, any advice before I do it? If the injector doesn't solve the problem I am not sure what the next step is.
03-03-2016, 10:41 AM
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