Bostech Auto Blog

Table of Contents Introduction: The Short Lived Twin Turbo PowerStroke The 6.4L PowerStroke Platform at a Glance Problem 1: EGR Cooler Failure (Two Coolers, Twice the Trouble) Problem 2: Radiator Leaks and Cooling System Weakness Problem 3: Cracked Turbo Up Pipes Problem 4: High Pressure Fuel Pum …

Table of Contents Introduction: The Bridge Between LB7 and LBZ The LLY Duramax at a Glance Problem 1: Overheating Under Load Problem 2: Restrictive Turbo Inlet Manifold Problem 3: Head Gasket Failure Problem 4: Cooling Stack and Fan Clutch Weakness Problem 5: Water Pump Failure Problem 6: Injecto …

Table of Contents Introduction: The 5.9L Cummins Across Four Generations Generation Overview: 12V VE, 12V P7100, 24V VP44, and Common Rail The Killer Dowel Pin (KDP): 1989 to 2002 P7100 Overflow Valve Failure: 1994 to 1998 VE Pump Seal Deterioration: 1989 to 1993 VP44 Injection Pump Failure: 1998 …

Table of Contents Introduction: The Last Pre Emissions PowerStroke The HEUI System and How It Differs From Other Diesels Problem 1: Camshaft Position Sensor (CPS) Failure Problem 2: Under Valve Cover Harness (UVCH) Faults Problem 3: Injector Driver Module (IDM) Failure Problem 4: ICP Sensor Failu …

Table of Contents Introduction: The Modern Cummins Story The 6.7L Cummins Across Three Generations Problem 1: EGR Cooler Failure Problem 2: EGR Valve Clogging and Sticking Problem 3: DPF Clogging and Regeneration Trouble Problem 4: VGT Turbo Vane Sticking and Actuator Failure Problem 5: Grid Heat …

Table of Contents Introduction: The First Duramax and Its Famous Weakness The LB7 Fuel System and How the Injectors Work The Three Original Injector Failure Modes Symptoms of LB7 Injector Failure Diagnostic Trouble Codes on the LB7 Diagnostic Step 1: Reading Balance Rates Diagnostic Step 2: The I …