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  1. 5.0L Cummins V8 Turbo Diesel
    Hello All - 18' XD P4X with 23k on the 5.0 stock Diesel is sputtering/stumbling while accelerating for the first couple of minutes after cold start. I usually start it up and let it run for about 30-45 seconds in colder weather before easing it on to the highway. Across all temps and weather...