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International Automotive Technicians Network
Re: injector circuit open
Posted to HD/Fleet Forum on 1/29/2021

Good morning, We had two of these MP7 engines with intermittent miss fires. Truck was just out of warranty but Mack gave me a new engine wire harness to put in. The old harness had the injector wire insulation all cracked and current jumping to ground ? Replac... Login to read more.