Do you have to Prime the fuel filter?

I didn’t bother to refill the fuel filter tank either. It wouldn’t hurt to prime the system, but I don’t think it’s detrimental to not do it either. The only time I think it would be necessary to prime the system is if the entire fuel system was drained – that includes the line from the tank to the common rail.

Why is my fuel pump not priming after a fuel filter change?

At the minimum, fill the fuel filter housing. The big concern is that the fuel pump is lubricated by diesel. I haven’t experienced any problems not priming the fuel system after a FF change.

What to do when your fuel filter is full of diesel?

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. Move to the driver’s seat and turn the ignition to the accessory position for about 10 seconds.

Where is the primer bulb on a diesel engine?

Locate the primer bulb on top of the primary fuel filter housing, located 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.

Can you change the fuel filter without priming?

Plus, once you start the vehicle, the lift pump is already sending fuel from the tank into the filter housing. For whatever it’s worth, I checked with Mike Hevster (TDI mechanic in NJ) who also said that its fine to change filters without priming under most circumstances.

How do you Prime a diesel fuel filter?

Crank the engine on the fourth turn of the engine, and let it run for about 15 to 20 seconds. Turn the engine off, and inspect the fuel filter for any signs of gas leaking from the fuel filter. Place the diesel fuel filter in an upright position. Completely fill the diesel filter of fresh diesel.

What should I do after a fuel filter change?

When you go to start after a FF change, crank for about 10 seconds at a time and let the starter cool down for 1/2 hour after 2 or 3 attempts. Of course the best way to purge out the air is with the maintenance manual procedure.

How to Prime after running out of diesel fuel in a Ford?

With that in mind, it’s best to avoid running out of diesel fuel. Anyone with basic automotive repair skill can prime the fuel system in a Ford diesel in about fifteen minutes. Fill the fuel tank with diesel fuel and diesel fuel lubricity additive.

What to do if you run your NPR or NQR 4hk1 diesel engine?

2) Locate your fuel primer pump on the fuel filter housing, also locate the fuel rail on the engine (you will need to flip the cab forward to access the engine) Loosen bleeder bolt on priming pump. Pump till fuel comes out. Tighten bolt and crank engine for a minute, and the truck should start. If the truck will not start to see the next step.

How do you Prime a Duramax Primmer filter?

After the filter is primed, you have to close off the bleeder, and pump the primmer about 15 more times to get fuel to the injectors. kalamykid : the primer should get hard to push.

Is the HPFP still running after a fuel filter change?

I don’t believe the HPFP would have run dry as there’s still fuel in the lines leading into the HPFP. There’s also fuel in the line running from the main fuel tank into the filter housing. Plus, once you start the vehicle, the lift pump is already sending fuel from the tank into the filter housing.

How to choose the right filter for your fuel tank?

When determining which filter is right for your fuel storage tank, you must first know the flow rate of your system. If you are replacing a spin-on filter on an existing adapter, you need to know the adapter size.

What should I do if I Fill my diesel fuel tank with gasoline?

In the event you accidently fill your diesel fuel tank with gasoline, it is best to not start the truck and have it towed to the nearest service center, where they will need to drain the fuel tank. If you do not realize your mistake until the engine is running, shut it off and have the tank drained and the fuel filters replaced immediately.

How do you replace a fuel filter element?

P lace the open bag around the filter element, then loosen the element retaining bolt with a 7/16″ wrench releasing the fuel and element into the bag. Clean the lower part of the bowl that retains the element. It should be free of sediment. Fit the new element using the new rubber sealing rings provided.

At the minimum, fill the fuel filter housing. The big concern is that the fuel pump is lubricated by diesel. I haven’t experienced any problems not priming the fuel system after a FF change.

What happens when you change the fuel filter?

In my case, when I changed filters I allowed whatever fuel was in the old filter to drain back into the fuel filter tank. The tank was about half full when I put the new filter in. I don’t believe the HPFP would have run dry as there’s still fuel in the lines leading into the HPFP.

How long does it take to start a car after a fuel filter change?

BTW, after replacing my fuel filter, it didn’t take 30 seconds to start the car. It started after 1 or 2 seconds as it always does. Not sure why some people out there have reported such; it was not applicable in my instance. What a lot of mechanics do is to fill the new filter with a good injector cleaner.