3 Top Things You Need to Know about A Fuel Shut off Solenoid

Engine spare parts consist of many parts, including camshaft, carburetor, cylinder head, distributor, drain plug, engine block, exhaust manifold, inlet/exhaust valve, intake manifold, oil container, oil cooler, oil dipstick, oil filter, compressor parts store of air intake exhaust system, shut off solenoid and so on. This article will tell you 3 top things you need to know about a fuel shut off solenoid.

What is a fuel shut off solenoid?

A fuel shut off solenoid is an electromagnetically-operated valve used to remotely cut the fuel supply to an engine. When the solenoid is energized, the motion of its plunger retracts the spring-loaded valve poppet from its seat, allowing fuel to pass through the valve. When the solenoid is deactivated, the valve spring pulls the poppet back onto its seat effectively cutting the flow of fuel. In short, a fuel shut off solenoid is a coil, that when energized with battery power allows the rack in the injection pump to open and pump fuel to the injectors. In other systems, the fuel shut off solenoid blocks off the fuel directly inside the injection pump. Typically, they need the power to open; and allow the engine to run. When electrical power is shut off, a spring closes the fuel flow. There are many brands of fuel shut off solenoid, such as; cummins fuel shut off solenoid, kubota fuel shut off solenoid, holdwell fuel shut off solenoid, etc.

How does a fuel shut off solenoid work?

A typical fuel shut off solenoid works by creating a magnetic field after receiving an electric current, which prompts the valve to open or close. In an engine with a diesel fuel shut-off solenoid, the solenoid is connected to the main electrical system of the machine. It receives an electrical current from the battery, which prompts the engine solenoid valve to open, allowing diesel fuel to run from the gas tank to the engine. When working properly, a fuel shut off solenoid transports diesel fuel from the fuel line to the solenoid through an inlet pipe. When the solenoid is energized, the movement of its plunger retracts the spring-loaded poppet from its seat, allowing fuel to pass through the valve. When the solenoid is deactivated, the valve spring pulls the poppet back onto its seat, effectively shutting off fuel flow. A fuel shut off solenoid can be activated manually or as part of an automatic engine management system.

How to test fuel shut off solenoid?

It can save your time and money when repairing fuel shut off solenoid by yourself if you have determined where the issue is: starter solenoid, battery, or starter. Start by locating the starter and work to narrow down the cause of the issue. Here is one easy way to test a fuel shut off solenoid for your reference.

Firstly, Open the hood of the vehicle. You will need to release the safety latch on the front of the vehicle to open the hood as well. Secondly, Find the starter. There should be a wire coming directly from the positive terminal of the battery to the starter. Thirdly, identify the cylinder on the side of the starter and listen for the solenoid to click when the key is turned. Then, check the battery. If your starter is failing to engage, it may be because the battery does not have sufficient energy battery with a voltmeter.