Find useful content that covers the diagnosis and troubleshooting of common diesel engine issues involving fuel delivery and much more.

Diesel Particulate Filter Breakdown and Operational Theory

This article is about the construction and operational theory of a diesel particulate filter and covers Selective Catalytic Reduction, and regeneration.

Ford EcoBlue High Efficiency Diesel Engines

Learn about the four-cylinder 2.0L Ford EcoBlue in the new Transit and Transit Custom vans. It is known for delivering an unrivalled package of fuel efficiency, performance and refinement.

Ford 6.4L Powerstroke High Pressure Fuel Pump

Unlike the 7.3 and 6.0 Powerstroke engines, the 6.4L is a common rail diesel engine. Instead of controlling fuel delivery with pressurized oil, the engine uses a high-pressure fuel pump to create very high fuel pressure and store it in the two fuel rails that directly feed the injectors. The pump is capable of creating…

Increased Longevity and Durability in Diesel Engines

The mid-size diesel truck has become quite popular among the younger generation. Partly because durability in diesel engines and modern diesel engine platforms offer a great source of power potential regardless of the manufacturer. Take an engine that already makes power and find ways to make more. Turbocharged diesel engines have a huge amount of…

6.4 Ford Powerstroke Horizontal Fuel Conditioning Module

The 6.4 Ford Powerstroke engine’s low-pressure fuel system uses a Horizontal Fuel Conditioning Module (HFCM) to pump fuel from the tank to the engine. The normal operating pressure is 3-8 psi. On the 6.4 applications, a Schrader valve test port is provided on the fuel cooler assembly. The HFCM is mounted to the driver’s side…

Ford 6.0L Powerstroke Diesel Injectors

The 6.0 Powerstroke engine, like the 7.3 its predecessor, uses Hydraulic Electronic Unit Diesel Injectors (HEUI), which receive energy to open from engine lube oil that’s pressurized by a gear-driven high-pressure pump. The PCM communicates to the Fuel Injection Control Module (FICM) that it’s time to fire the injector. When that happens, an electrical signal…

Ford 6.0L Diesel FICM Repair and Operation

For Powerstroke engines, FICM repair (Fuel Injection Control Module) is an integral part to diesel maintenance.

Cummins 6.7L Diesel Turbocharger

In 2007, Dodge trucks began using the 6.7L common rail Cummins diesel turbocharger engine, which uses a Variable Geometry Turbocharger (VGT). On the 6.7L, the VGT has a patented one-piece sliding nozzle that continuously moves to vary the power of the turbine and the amount of air delivered to the engine. The movement allows turbine…

Diesel Engine Coolant Maintenance

The coolant system is one of the most overlooked maintenance items in a diesel engine and engine coolant maintenance is just as important as an oil change.

No-Start Diesel Diagnosis

Looking at diesel diagnosis, let’s discuss the two most basic needs of diesel engine operation: proper combustion chamber heat and amount of fuel injected.

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