This research paper will focus on how injectors work and what each part does to work. The injector that will be the subject of research is the 7.3 injectors. There are different styles of injectors but they all work the same. Some injectors operate from push tubes that open the injector port. The injector that is going to be presented is that of the 7.3 injectors because they work electronically to spray the fuel into the cylinder. The research will look at the parts of the injector and what each part does to make the injector work. This will help other readers of the research paper know what the injectors do and how they work. Injectors are an important part of diesel engines. If an injector goes out, the cylinder that the injector went out on will be dead. When a cylinder is dead, it does not receive fuel to burn it. A diesel engine lacks combustion just like a gasoline engine lacks spark. This is why injectors are a good project because they are what makes the engine run. First of all, what are the injector parts? Some of the parts of the injector are the nozzles, the injector port cap and the upper injector filter. The nozzle is located on the part of the injector that is inserted into the cylinder to spray fuel into the cylinder. The injector must spray in a certain way, otherwise not all the fuel will be burned inside the cylinder. The next important part of the injectors is the injector port cap. The port plug is what prevents fuel from flowing inside the cylinder. If fuel enters the cylinder, that cylinder will overflow and cause that cylinder to die. The only way for the port cap to open is when the fuel pressure exceeds a certain pressure to open the port cap to let the fuel go to the injector nozzle. The...... middle of paper ......leage.How to prevent injectors from going bad is to have them cleaned. They can be cleaned in different ways. The best way to clean them is to buy a diesel fuel supplement to pour in with your fuel and it will clean the injectors that way. Another way to clean the injectors is to manually remove them from the engine and clean them by hand. The best way is to dump the extra fuel with the fuel. The process of replacing the fuel injectors on a 7.3 involves removing the valve cover from the engine. After that, disconnect the wiring from the injector and glow plugs which is also connected to the valve cover gasket. Then you take the bracket that holds the injector in place, loosen the top bolt and completely remove the bottom one from the bracket. When you have done this you can take a lever and extract the injector from the hole in which it is located..