Prosource Diesel

  Introduction The modern diesel pickup market demands strength, efficiency, and long-term reliability, and General Motors designed the L5P to meet those expectations. Still, owners often discuss l5p duramax issuesm related to emissions, sensors, and fueling as mileage increases. Built as a refined evolution of the lp5 engine platform, this powerplant delivers impressive towing power, but understanding its weaknesses helps drivers plan maintenance, control costs, and realistically assess how long will a l5p duramax last under real-world conditions. L5P Duramax Engine Overview The  L5P Duramax  is a 6.6-liter V8 turbo-diesel introduced for heavy-duty Chevrolet and GMC trucks. It was engineered to comply with strict emissions regulations while significantly increasing output over earlier versions. With a factory rating exceeding 440 horsepower and massive torque, it quickly became popular among fleet operators and towing enthusiasts. This engine uses a high-pressure common-...

  Duramax diesel engines have become a cornerstone of heavy-duty performance and reliability in Chevrolet and GMC trucks over the past two decades. For anyone curious about how these powerplants have evolved, this guide breaks down the major milestones, changes, and characteristics of each generation — from the original early-2000s models to modern, high-output diesels. Along the way, you’ll get a clear timeline that helps you understand durmax engines by year and key developments that shaped the platform. Introduction to Duramax Power When General Motors teamed up with Isuzu in the late 1990s to develop a modern diesel engine for its heavy-duty pickups, the result was something that quickly reshaped the market. Prior diesels were underpowered and unreliable, but the new Duramax combined turbocharging, direct fuel injection, and robust internal engineering to offer impressive torque and longevity. From its debut in 2001 to today’s advanced variants, every generation has brought mea...

  Introduction to the CP4 Pump Modern diesel engines demand precise fuel delivery at extremely high pressures to meet performance and emissions standards. To achieve this, manufacturers adopted compact high-pressure fuel systems capable of supplying common rail injectors with consistent flow. Among these systems, the CP4 series became widely used across light- and medium-duty diesel platforms. While efficient and capable, it has also gained attention due to reliability concerns, making it a frequent topic among truck owners, technicians, and fleet managers. Understanding how this pump operates, why issues occur, and what solutions exist helps owners make informed maintenance and upgrade decisions. How the CP4 Pump Works The  CP4 pump  is a high-pressure injection pump driven mechanically by the engine. Its role is to draw low-pressure fuel from the tank, compress it to extremely high pressure, and deliver it to the common rail feeding the injectors. Internal cam lobes and...

  The 5.9L Cummins 24-valve engine has earned legendary status among diesel enthusiasts for its durability, tuning potential, and real-world performance. One of the biggest factors that determines how this engine delivers power—and how long it lasts—is the turbocharger. Choosing the right turbo is not just about peak horsepower; it’s about balanced airflow, controlled exhaust gas temperatures, and long-term reliability. A well-matched turbo upgrade can transform throttle response, towing capability, and daily drivability without compromising engine life. This article breaks down how a modern turbo upgrade impacts power output and reliability on a 5.9 Cummins 24-valve, focusing on design, boost control, and performance characteristics. 5.9 Cummins Turbo Overview The factory  turbo on the 5.9 Cummins 24-valve  was designed to meet emissions and durability standards rather than maximize airflow. While reliable, stock units often become restrictive once fueling is increased. ...

  Intro: Turbo Upgrade Debate The 6.0 Powerstroke community has always been divided on one question— should you stick with the factory turbo or move to a larger upgraded unit?  While the stock charger is capable of respectable power and drivability, many owners chase stronger towing performance, better throttle response, and higher horsepower. But bigger doesn’t always mean better, and choosing the wrong setup can hurt reliability or drivability. Understanding where turbo upgrades truly shine helps you make the right decision for your build. Stock Turbo Specs Overview From the factory, the 6.0 Powerstroke uses a variable-geometry Garrett GT3782VA turbocharger. This unit is engineered to balance spool, boost control, and towing performance. It’s often referenced for its  6.0 Powerstroke stock turbo size m m , and while it’s not the largest on the market, it delivers dependable airflow for work-duty applications. Many owners refer to the  6.0 Powerstroke turbo size ...

Introduction to LML Head Gaskets The 2011–2016 LML Duramax engine is known for its reliability, power, and towing capability. However, like any high-compression diesel, it can face head gasket issues over time—especially under heavy loads, high mileage, or tuning. When the  lml head gasket  fails, the engine begins to show several warning signs that shouldn’t be ignored. Detecting these symptoms early can prevent expensive engine damage and help owners plan timely repairs. Understanding how these signs show up in real driving conditions is essential for anyone who owns, services, or works on an LML Duramax. Blown head gaskets rarely fail instantly. Instead, they typically worsen gradually, starting with overheating, subtle coolant loss, or unusually pressurized hoses. This guide breaks down the key symptoms you should look for so you can diagnose problems before they escalate into major engine repairs. Overheating Issues One of the earliest and most common signs of LML Duramax...