I've got an MSD 2378 on my 351W going along with a Holley Sniper, HyperSpark CDI box, and HyperSpark coil. This just started happening about two weeks ago. Last weekend I took off the cap and found that the cap & rotor were both black (first picture with a green background). At that time the truck was running like it was down on three cylinders. It had no power and was running rough. I cleaned them off with some sandpaper and it was running a lot better after that, it had that get up & go again, but still wasn't great around 2000 RPM on the interstate. Now four days later I'm having similar issues, which I'm guessing will only get worse like it did last time. I do have a new cap & rotor coming Thursday, but I doubt that will fix the problem.
Thanks, Griffin
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