Describing 7.3 L Injectors and How They Are Put Together

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This senior research project is describing how 7.3 litre injectors and how they are put together, how they operate. This project will teach you all about 7.3 litre injectors, test them, and know how they work. There are many parts to an injector, internal and external. All the parts have a very specific job of what they do and how they do it. All the parts work together and with some oil pressure your injector fires.

There are many internal parts to the injector. Starts with a barrel then moves down to a plunger then there is a check valve, below that is a spacer with the nozzle springs inside of it, lastly is the nozzle. All of these parts have specific and unique jobs. Nozzle has a needle in it that works kind of like a piston that once the pressure build up the needle forces forward and sprays fuel. There is a spacer above the nozzle with the nozzle springs that force the needle down. Above the spacer is a check valve, the check valve allows the right amount of fuel into the nozzle. The plunger and barrel are located above the check valve. It has a spring on the plunger that has to hold resistance of the pressure until it reaches the correct amount before it will let the injector fires. There is two internal o-rings one that is around the plunger and one that sets between the nut and body.

There are three parts exterior parts to these injectors. The injector nut holds the nozzle and spacer with the nozzle springs. The injector body holds the plunger and barrel, it is also where the solenoid is bolted down on top of the body. The solenoid is plugged in to the pigtail on the valve cover gasket, which sends electrical current to the injector telling it when to fire. There is a total of five o-rings on the exterior side of the ...

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...rs and glow plugs from the valve cover gasket. Once that is done unplug the gasket from the wiring harness and remove it from the head. There is three bolts on each injector one which is holding the oil splash shield to the injector and two holding the injector to the head. To remove the injector you only have to remove the bottom bolt from the injector. then you get a pry bar and gently pry on the injector until it pops out. Install a new injector you put it in the injector cup and lightly smack it with a rubber mallet until it seats in the head.

This paper has informed you on multiple parts and operations of 7.3 litre injectors. Listing their parts, both internal and external. How the entire system works as one, and how it makes the engine run. Without fuel of some sort the engine would not run. So with this research paper I hope you have learned something.

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