Ever wondered which injectors are in your truck, what they look like, or even how they work? Throughout the progression of diesel injection systems, this component has gone from extremely simple to ...

As newer and flashier trucks became available, many people forgot about the older '89 to '93 Dodges. There's no doubt that this early 5.9L Cummins is a workhorse, but can it make power? The answer is, ...

In the swirling, churning fireball at the heart of every internal combustion engine, complexity reigns supreme. Valves and pistons lunge up and down at thousands of feet per second, pressure spikes to ...

Here's the story of perhaps the most legendary diesel engine ever made, the Cummins 5.9L.