6.7 cyl 7 contribution....

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Feb 2, 2021 | 01:22 PM

Thomas Asselmeier

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Joined: Feb 2021

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6.7 cyl 7 contribution....

2012 6.7 132k, headed to off-road park and I blew a return line, fixed and went to parts store and replaced filters. Noticed some smoke from exhaust bluish tent. On the way home started running rough/low power and cyl 7 contribution code comes up. Changed injector it’s MUCH better but still missing. Cyl 7.... It’s higher than all others. Smooths our into rpm. Does have fuel knock (I hope that’s what it is) as it goes away. It’s noticed at idle and just into throttle. Also, it will randomly go away after some drives only to return after startup. Rail pressures per ezlynk tuner are at 15-18k cruising on the road.

Feb 4, 2021 | 01:45 PM

Fatz29708

Senior User

Joined: Feb 2020

Posts: 396

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From: Fort Mill SC

My understanding is you have to reprogram the new injector or things dont work 100%, the new injector should have come with PIDS?, I think that the term.