Mercedes Mullins
The Detroit Diesel series engines are equipped with primary and secondary fuel filters. These filters need to be replaced and the fuel system will require priming after the fuel filters are replaced. This can be done by pressing the primer bulb in and out with your hand and a clean rag until the bulb will no longer push in. This means the fuel filters are full of diesel. Then, turn the ignition to the accessory position for about 10 seconds. This will heat the glow plugs and finish priming the fuel filters.
| Characteristics | Values |
|---|---|
| Step 1 | Press the primer bulb in and out with your hand and a clean rag until the bulb will no longer push in. |
| Step 2 | Move to the driver's seat and turn the ignition to the accessory position for about 10 seconds. |
| Step 3 | Fill the filters, crack the return line check valve, and then crank for about 15 to 30 seconds. |
| Step 4 | Check the filter after the second crank time. Once the fitting starts to get fuel, tighten it quickly and the engine will fire up. |
| Alternative Step 1 | After installing the new filters, turn the key on with cranking the engine over and let the lift pump run until it stops. |
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What You'll Learn
Locating the primer bulb
To locate the primer bulb, you need to look on top of the primary fuel filter housing, which is on the right-hand side of the engine. Once you have located the primer bulb, you need to press it in and out with your hand and a clean rag until the bulb will no longer push in. This means the fuel filters are full of diesel.
The Detroit Diesel series engines come equipped with primary and secondary fuel filters. The diesel is pumped out of the tank and into the fuel lines, and then flows into the fuel filters. Any sediment from the diesel will get trapped inside of each fuel filter, allowing the cleansed fuel to flow to the injectors and engine. The fuel system will require priming after the fuel filters are replaced.
After installing the new filters, turn the key on with cranking the engine over and let the lift pump run until it stops. You can also fill the filters, crack the return line check valve, and then crank for about 15 to 30 seconds. This will help purge the air through the head. Make sure you do not let the filter get empty. Check the filter after the second crank time. Once the fitting starts to get fuel, tighten it quickly and the engine will fire up.
Finally, move to the driver's seat and turn the ignition to the accessory position for about 10 seconds. This will heat the glow plugs and finish priming the fuel filters.
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Filling the filters
Locate the Primer Bulb: Start by locating the primer bulb on top of the primary fuel filter housing. It is usually found on the right-hand side of the engine.
Press the Primer Bulb: Using your hand and a clean rag, press the primer bulb in and out until it will no longer push in. This action fills the fuel filters with diesel.
Turn the Ignition: Move to the driver's seat and turn the ignition to the accessory position for about 10 seconds. This step helps heat the glow plugs and completes the priming process for the fuel filters.
Check the Filter: After cranking the engine, keep an eye on the filter. Once the fitting starts to get fuel, quickly tighten it. This ensures that the engine will fire up smoothly.
Do Not Let the Filter Empty: It is important to note that you should not let the filter run empty during the priming process. Ensure there is always fuel in the filter to maintain a smooth priming operation.
By following these steps, you can effectively fill the filters and prime your 466 Detroit engine after a fuel filter replacement.
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Cracking the return line check valve
To prime a 466 Detroit after a fuel filter replacement, you must first fill the filters. Then, crack the return line check valve and crank for 15 to 30 seconds. This will help to purge the air through the head.
To crack the return line check valve, you must first locate the primer bulb on top of the primary fuel filter housing. This is on the right-hand side of the engine. Press the primer bulb in and out with your hand and a clean rag until the bulb will no longer push in. This means the fuel filters are full of diesel.
Next, move to the driver's seat and turn the ignition to the accessory position for about 10 seconds. This will heat the glow plugs and finish priming the fuel filters.
Do not let the filter get empty. Check the filter after the second crank time. Once the fitting starts to get fuel, tighten it quickly and the engine will fire up.
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Cranking the engine
First, locate the primer bulb on top of the primary fuel filter housing. This is usually found on the right-hand side of the engine. Press the primer bulb in and out with your hand and a clean rag until it can no longer be pushed in. This indicates that the fuel filters are now full of diesel.
Next, move to the driver's seat and turn the ignition to the accessory position. Hold it in this position for about 10 seconds. This step is important as it helps heat the glow plugs, completing the priming process for the fuel filters.
After the filters are primed, it's time to crank the engine. Turn the key to start the engine, and let the lift pump run until it stops. It's important to ensure that the filters remain full during this process. You can check this by observing the return line check valve.
To purge any air through the head, crank the engine for approximately 15 to 30 seconds. Keep a close eye on the filter after the second crank time. Once the fitting starts to get fuel, tighten it quickly, and the engine should fire up smoothly.
By following these steps, you'll be able to effectively crank the engine and complete the priming process after replacing the fuel filters in your 466 Detroit engine.
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Heating the glow plugs
To begin, locate the primer bulb on top of the primary fuel filter housing, which is on the right-hand side of the engine. Press the primer bulb in and out with your hand and a clean rag until the bulb will no longer push in. This indicates that the fuel filters are full of diesel.
Next, move to the driver's seat and turn the ignition to the accessory position. This will heat the glow plugs and complete the priming process for the fuel filters.
It is important to ensure that the diesel is pumped out of the tank and into the fuel lines, flowing into the fuel filters. Any sediment in the diesel will be trapped inside the fuel filters, allowing cleansed fuel to flow to the injectors and engine.
After installing the new filters, simply turn the key and crank the engine over, allowing the lift pump to run until it stops. This will help to ensure that the fuel system is properly primed and ready for operation.
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Frequently asked questions
Press the primer bulb in and out with your hand and a clean rag until the bulb will no longer push in. Move to the driver's seat and turn the ignition to the accessory position for about 10 seconds.
The primer bulb is located on top of the primary fuel filter housing, on the right-hand side of the engine.
The primer bulb helps to fill the fuel filters with diesel.
Crack the return line check valve, and then crank for about 15 to 30 seconds. This will help purge the air through the head.
