Need some help from the expert here…….
My son’s 2020 1500 Classic “check engine light” came on the other day. He thought it was the fuel cap since he just filled up. He re-set the cap and the light went off. The following day the light came on again and stays on. He did a preliminary scan which showed a P0300 Code —- generic misfire code. Truck runs fine with no noticeable misfires or performance problems. Today he used a friends more sophisticated scanner (don’t know which model) that showed misfire counter at cylinders 6 & 7. The truck, though, still runs fine. My first thought was plugs and/or coil problems or lose connections at those two cylinders … but I’m not sure. I certainly don’t mine spending a Saturday afternoon changing plug/coils with my son on his truck but is that the problem? Any thoughts or ideas to chase would be appreciated. Thanks.
My son’s 2020 1500 Classic “check engine light” came on the other day. He thought it was the fuel cap since he just filled up. He re-set the cap and the light went off. The following day the light came on again and stays on. He did a preliminary scan which showed a P0300 Code —- generic misfire code. Truck runs fine with no noticeable misfires or performance problems. Today he used a friends more sophisticated scanner (don’t know which model) that showed misfire counter at cylinders 6 & 7. The truck, though, still runs fine. My first thought was plugs and/or coil problems or lose connections at those two cylinders … but I’m not sure. I certainly don’t mine spending a Saturday afternoon changing plug/coils with my son on his truck but is that the problem? Any thoughts or ideas to chase would be appreciated. Thanks.