Why is my FSS blue on my Cummins diesel?

Why is my FSS blue on my Cummins diesel?

The blue fusible link is a common problem ( Diagram HERE ), it fuses the “Pull” wire going to the FSS.

What does FSS stand for in diesel engine?

The FSS (Fuel Shut off Solenoid) is the way our trucks can turn on and off the engine. First off it is one of the most needlessly replaced parts on these engines.

Where is the shut off solenoid on a Cummins diesel?

The rubber boot and the plunger coming out of the boot are part of the shut off solenoid. the lever the shut off solenoid pulls up is part of the Injector Pump There are 3 wires going to the FSS, Ground, Hold and Pull. “Ground” wire, truck side is black with a orange stripe, FSS side is all black, it is connected to ground all the time.

Why does fuel shut off solenoid ( FSS ) burn up?

First off it is one of the most needlessly replaced parts on these engines. The most common way to kill them is the starter to stick on giving the “Pull” wire power for a long period of time, which produces a lot of heat inside the FSS, and it burns up, you most likely don’t need to replace it unless it looks burnt.

The blue fusible link is a common problem ( Diagram HERE ), it fuses the “Pull” wire going to the FSS.

The FSS (Fuel Shut off Solenoid) is the way our trucks can turn on and off the engine. First off it is one of the most needlessly replaced parts on these engines.

The rubber boot and the plunger coming out of the boot are part of the shut off solenoid. the lever the shut off solenoid pulls up is part of the Injector Pump There are 3 wires going to the FSS, Ground, Hold and Pull. “Ground” wire, truck side is black with a orange stripe, FSS side is all black, it is connected to ground all the time.

First off it is one of the most needlessly replaced parts on these engines. The most common way to kill them is the starter to stick on giving the “Pull” wire power for a long period of time, which produces a lot of heat inside the FSS, and it burns up, you most likely don’t need to replace it unless it looks burnt.