“Service DEF System See Dealer” (NOW, WHAT?!)

Very often the issues that come up with our truck’s DEF systems can be traced back to a clogged or otherwise malfunctioning DEF injector.

When you start your truck to see the dashboard message “Service DEF System See Dealer”, you’re suddenly wondering if you’re in for it… Maybe not. Read on so you’ll know in advance (and can skip the panic!) …

Maintaining Your Dodge Cummins Fuel Pump and Injectors

Extending High Pressure Fuel Pump and Injecotr Life

The Cummins diesel is a longevity engine. When serviced properly, the engine should last 500,000 to a million miles between teardowns. Peripherals like the turbocharger, fuel injectors and the fuel pump, however, can wear out or fail much earlier. A well maintained fuel system can keep injectors going for 250,000 miles or more. The original common rail diesel injectors and CP3 pump in my 2005 Ram have been trouble free for 180,000 miles now. These injectors have delivered good performance and fuel efficiency. There are no signs of spray pattern…

The Case of the $942 Fuel Filter

Digital multimeter

(or How to Change a #5 Injector) Solving the mystery of a vehicle’s mechanical problem can require some lengthy detective work—as demonstrated in this repair that I call “The Case of the $942 Fuel Filter.” The initial complaint by the Ram Turbo Diesel’s owner provided me with scant evidence for solving the problem: “It runs good,” he said, “for a while after I change the fuel filter, but it has low power.” I doubted that the fuel filter was the culprit. But I had little to go on. This would…