Bostech Auto Blog

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 …

Table of Contents Introduction: Why the 6.0L Has the Reputation It Does The 6.0L PowerStroke Platform at a Glance Problem 1: Oil Cooler Failure Problem 2: EGR Cooler Failure Problem 3: Head Gasket Failure and Stretched Head Bolts Problem 4: HEUI Injector Stiction and Failure Problem 5: FICM Failu …

Table of Contents Introduction: The Most Expensive Eight Pounds in Diesel What Is the CP4 and How It Works CP4 Application List Across Diesel Platforms The L5P Clarification: HP4 Is Not CP4 Why the CP4 Fails: The ULSD Lubricity Problem The Cascading Failure: From Wear to Total System Loss CP4 Fai …

Table of Contents What Are Turbo Up Pipes and Why Do They Matter? How Pre-Turbo Exhaust Leaks Destroy Performance Symptoms of Leaking Up Pipes and Exhaust Connections Ford PowerStroke Up Pipe Problems by Generation Duramax Up Pipe Problems Ram Cummins Exhaust Manifold and Turbo Connection Issues …

Table of Contents Duramax Turbocharger Evolution: LB7 Through L5P LB7 Duramax Turbo Problems (2001 to 2004) LLY Duramax Turbo Problems (2004.5 to 2005) LBZ Duramax Turbo Problems (2006 to 2007) LMM Duramax Turbo Problems (2007.5 to 2010) LML Duramax Turbo Problems (2011 to 2016) L5P Duramax Turbo …