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Nearly every diesel engine on the road today uses fuel injection technology of some sort. That means the fuel injected into your combustion chamber must first undergo a process of pressurization before it's delivered to your injectors. Unfortunately, a lot can go wrong along the way to cause you to lose fuel pressure. How Your Fuel System Works First things first, though. Let's talk about how your fuel injection system operates. Since many high-performance diesels use a common rail design, we'll use this as our example. A common rail diesel (CRD) has three main segments: High Pressure - The fuel...

Although fuel injectors are designed to last as long as a vehicle does, it is not impossible for one to fail. If you want to test your fuel injectors yourself, you will need to gather some tools first. Keep reading to find out which ones some readers recommend. Cassio Davide Head of Marketing at NC CuttingTools. Earplugs, Battery Gauge, and Multimeter To test for possible damage to the fuel injectors, you'll need a good pair of earplugs, a battery gauge, and a multimeter. First, plug in your multimeter to the positive battery terminal. Next, turn the engine on and plug...

If you have ever hauled a large load down a mountain, you know what kind of nightmare scenario this can present for your brakes. Trying to slow down for a sharp curve with thousands of pounds riding your tail isn't exactly fun for you, either. And while downshifting can help ease the wear on your brakes (and your nerves), your diesel would do well with a supplemental braking system to halt your momentum on steep grades. Enter the exhaust brake. The exhaust brake is a butterfly valve that sits in your exhaust line. When activated, either manually or via the...

One could argue that every diesel engine should have a turbocharger. They increase engine performance, boost fuel efficiency, and deliver more horsepower and towing capacity. In addition, turbochargers give your vehicle the functional power and capacity of a much larger engine without the actual size, allowing for reduced emissions. Size Doesn’t Matter An engine’s power, or the strength of its combustion, depends on how much fuel and oxygen it can burn. When you have a smaller engine, the amount of air you can bring in is naturally limited by space. Conventional wisdom would say that if you want your vehicle...

If your vehicle is not providing the power it typically does, you’re noticing suspicious exhaust, and you hear a whining from the engine, you might be experiencing a turbocharger failure. What other symptoms could warn you that your turbocharger is struggling? Is a failed turbocharger something you can learn to fix on the side of the road while watching a video on the internet? Or is this a problem that should be left to the professionals? Some of our readers have some advice about what to look for and what to do if your turbocharger fails. Keep reading to find...