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Thread: Atomic EFI bucks has error code INJ DC.

  1. #1

    Default Atomic EFI bucks has error code INJ DC.

    I've driven my car about seven or eight times since I installed my MSD Atomic EFI. Twice it has acted up by violently bucking when starting to accelerate. I can only accelerate to about 50 MPH and that's only by just barely stepping on the accelerator. The first time I had no error code so I just reset by disconnecting and reconnecting power. It seemed to work just fine until yesterday when it did it again. This time I got a error code INJ DC. I also noticed that my fuel pump pressure now bounces from 40 to 50 PSI and the fuel pump which is externally mounted makes an up & down whine where as it was a steady whine before. I do have a return line and all my parts are from MSD. I think the fuel pump may be bad, but since it's powered from the EFI unit, I don't know for sure. I'm new to this Forum, but I looked at most of the questions and I couldn't find anything that seemed to fit my problem. I did reset the unit and the error code is gone, but the fuel pressure up & down has not gone away. I'm afraid to drive it very far because if it acts up, it's very hard to drive. The MSD Atomic EFI is installed in a 1948 Lincoln Continental with a 351 Windsor with probably about 350HP. When it's working, the car drives great, idles smoothly, and accelerates the way it should.

  2. #2


    CHECK YOUR GROUND! Make sure that everything is grounded, directly to the battery negative is best. Take care, Ed.

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