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2016 6.7 rough/bad idling and during coasting

270 Views 0 Replies 1 Participant Last post by  Jamesaelliott9
Engine has 134k miles. It just randomly started doing it at 3-4 second bursts at random times while idling and while driving once foot comes off accelerator. It’s loud and obnoxious, sounds like a power stroke is the best way I can describe the noise. Any clue on what this could be?
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