Bostech Auto Blog

Table of Contents L5P Duramax Overview and Specifications DEF, SCR, and NOx Sensor Problems DPF, Regeneration, and EGR Issues MAP Sensor Soot Fouling Fuel Injector and Injector Connector Problems The Denso HP4 Fuel System: What Owners Should Know VGT Turbocharger and Vane Actuator Issues Cooling …

Table of Contents The LML Duramax and Its Fuel System How the CP4.2 Works and Why It Fails Warning Signs of a Failing LML CP4 Trouble Codes Linked to CP4 Failure How to Diagnose a Suspect CP4 Pump What a Contaminated Fuel System Repair Involves Protecting a CP4 That Is Still Running The LML CP3 C …

Table of Contents LMM Duramax Overview and Specifications DPF Clogging and Regeneration Problems EGR Valve, EGR Cooler, and Intake Soot Buildup LMM Fuel Injector Problems CP3 Injection Pump Wear and Low Rail Pressure VGT Turbocharger Vane Sticking and Up-Pipe Leaks Coolant Loss: Water Pump, Turbo …

Table of Contents How to Identify Which Duramax You Are Looking At Duramax Generations at a Glance LLY Duramax (2004.5-2005) LBZ Duramax (2006-2007) LMM Duramax (2007.5-2010) LML Duramax (2011-2016) Head-to-Head Comparison Which Duramax Should You Buy? Pre-Purchase Inspection Checklist for Any Du …

Table of Contents Introduction: The Duramax Everyone Wants The LBZ Duramax at a Glance Problem 1: Water Pump Failure Problem 2: Injector Harness Chafing and Misfires Problem 3: Fuel Injector Wear and Balance Rates Problem 4: VGT Turbo Vane Sticking Problem 5: Air in Fuel and Filter Head Problems …

Table of Contents Introduction: Ford Builds Its Own Diesel The 6.7L PowerStroke Across Three Generations Problem 1: CP4 High Pressure Fuel Pump Failure Problem 2: EGR Cooler and EGR Valve Failure Problem 3: Turbocharger Failures by Generation Problem 4: Radiator and Cooling System Leaks Problem 5 …