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A fuel system contains many parts and serves a vital purpose. It gets fuel from the truck’s tank to the engine via the 5.9 Cummins fuel lines. The lines themselves should last a long time, but if you notice a fuel leak, they should be inspected and may need replacing. A part that does need replacing every now and then is the 5.9 Cummins fuel filter. The filter protects the engine by removing dirt and debris from the fuel, and it will eventually clog up. A clogged filter can result in decreased performance as not enough fuel will make its way to the engine. +Read more
The fuel makes its way from the tank to the engine thanks to a couple of 5.9 Cummins fuel pumps. The 5.9 Cummins lift pump deals with the low-pressure side of the system and helps get fuel to the injection pump. Injection pumps are capable of pulling fuel from a tank on their own, but a lift pump ensures there is always a steady supply and helps protect both the injection pump and the Cummins 5.9 injectors.
Between the two pumps is the 5.9 Cummins fuel control actuator, which controls how much fuel is allowed to enter the injection pump. A faulty or damaged actuator should be replaced immediately, as it is designed to shield far more expensive parts from damage. At the end of the line is the 5.9 Cummins injection pump, which delivers fuel at high pressure to the 5.9 Cummins injectors, which in turn spray fuel vapor into the engine’s cylinders.
