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It doesn't have any spark plugs but it does have 8 glow plugs.
The Ford 7. 3L diesel engine came equipped with glow plugs to assist in getting the engine up to maximum compression to combustion efficiency. The glow plugs themselves are installed via factory drilled provisions into the engine's cylinder head banks.
There is one screwed into each cylinder from the top of the engine.
8... there is one per cylinder
Gas engine, none. Diesel, one per cylinder.
Remove the valve covers, the glow plugs are in the cylinder heads.
Do you have an old diesel or a new one? If you have an old diesel engine, you turn the key to the "run" position and look for the glow plug light. Glow plugs heat the cylinders, and when the engine is warm the light goes out, you turn the key and the engine starts. On a new diesel, you turn the key and it starts.
Glow plugs need electricity while starting the engine. After that, they do not use electricity, but stay red hot due to the heat of combustion and pressure within the cylinder.
The Cummins engine in a Dodge truck does not have glow plugs.The Cummins engine in a Dodge truck does not have glow plugs.
4 one for each cylinder Some Rover diesel engines only have 3 glow plugs, visible from the front of the engine. In the area where the fourth one would normally be (right-hand cylinder, viewed from front) there is no hole in the engine to receive one.
Glo plugs are basically a heater in the top of each cylinder that heat up for the better starting of a diesel engine.
Glow plugs and injectors are two different parts of two different engines. You may be referring to glow plugs or spark plugs. If you have a diesel engine, you will have glow plugs. If it is gasoline, it is spark plugs.