6.7 Cummins '07.5–'12 Symptoms

Common 6.7 Cummins ‘07.5–‘12 symptoms, what usually causes them, and how to narrow them down.

• Black Smoke Under Load — 6.7 Cummins (EGR + DPF, pre-SCR) Diagnostic reference for black smoke under load on 2007.5–2012 6.7L Cummins EGR+DPF pre-SCR.
• Engine Stalls or Dies While Driving — 6.7 Cummins (EGR + DPF, pre-SCR) Diagnostic guide for 6.7 Cummins (EGR + DPF, pre-SCR) 2007.5–2012 when the engine stalls or dies while driving or at idle. Focuses on fuel-system loss of rail…
• Frequent DPF Regenerations — 6.7 Cummins (EGR + DPF, pre-SCR) The 6.7 Cummins 2007.5–2012 uses EGR + DOC + NAC + DPF with no SCR/DEF. Frequent or constant regenerations mean the aftertreatment control is seeing a soot…
• Hard Start or Long Crank — 6.7 Cummins (EGR + DPF, pre-SCR) A diagnostic guide for hard start or long crank on 6.7 Cummins (EGR + DPF, pre-SCR) 2007.5–2012.
• Loss of Power or Limp Mode — 6.7 Cummins (EGR + DPF, pre-SCR) Diagnostic reference for 2007.5–2012 6.7L Cummins (EGR + DPF, pre-SCR) when the engine goes into limp mode or loses power, often with no boost. Covers VGT…
• Rough Idle and White Smoke on Cold Start — 6.7 Cummins (EGR + DPF, pre-SCR) Guide for 6.7 Cummins (EGR + DPF, pre-SCR) 2007.5–2012 showing rough idle and white smoke on cold start.