How does a fuel delivery module work? (3D animation)

Fuel delivery modules transport the fuel from the fuel tank for combustion. Our 3D animation shows its structure, the advantage of the swirl pot, the function of the suction jet pump and addresses the control units for demand-controlled fuel supply.

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[nostopgo]

Very superb animation. With alright details/information. Preferably it would've been nice with a voice over.

[deankay]

I can narrate the video as they sell parts. The fuel pump is kept in fuel by bleeding off a tiny volume into a Venturi valve at the bottom of the tank, even when low or near empty. This keeps a steady stream of fuel under pressure to the injectors. We know this! Right?
Well as miss fires create emissions and can damage the catalytic converter, US manufacturer asked a got a reduction in the sensitivity of misfire counts. This is your P0300. When components are changed that effect the PCM snap shot of power strokes, a relearn of the proper pulses produced as the crankshaft speeds up as it fires. The crank sensor provide this info. The Relearn can be found for your vehicle if crank sensor, crank, target wheel, PCM etc. But if low on fuel, it can smoosh to one side, leaving the pump to draw air. This reduces volume. Without volume, you can not create pressure and misfire occurs, CEL flashes once per second.
In the tank, the pump is inside a bucket, sit on the bottom and has two filters. This adds size and parts. Thanks EPA!
The small hose passes thru that Venturi and creates suction, drawing fuel into the bucket. This cools, lubricates the pump, providing a good fuel supply. Hoses submerged in fuel are special inside and out, so buy the right stuff. These are bottom referencing pumps and most, do not have a door on top to allow service. Too bad that is not a law! If a fuel pump fails at less than 100k miles, a pocket flat blade can push 3 tabs to allow the buckets removal. Inspect the inside bottom. If the filter is dark to black & a lot of debris, dust, dirt is inside, it came thru the larger filter on the bottom. This filter maybe rated at 140 microns and inside on the pumps inlet is say 80 microns. So dirt enters thru a tank vent valve, pass the activated carbon granules pushed by a spring to one end with a plastic vented plunger, covered with a fine screen. It can get into the tank as well as the gas station that may not sell a large amount of fuel (dirty tanks) lack of filter service either inside the pump or inline on the hose, next to the “Break-a-way” fitting as people drive away while the hose is still in the cars filler neck. Now, buy fuel from a high volume of fuel. Ask you tech to install a small engine paper filter on the fuel tank valve or glue a large foam on it if you drive on county roads with dust. These are commonly mounted behind the left rear wheel. Unfortunately, on this dust is in the tank, drain, remove tank, clean with really hot water and shake, shake and rock. Many don’t do it because it cost! Then install a factory pump and it fails in 25k miles. Why? Dirt & dust! It plugs things up, wears the pump motor or commentator plates & brushes. Use a scope on a fused jumper wire and look for inconsistencies in the wave form pattern. Most shops don’t have this lab scope or take the time, but it tells the health of the pump by seeing the waveform pattern, plus the amount of current it draws is telling. Too high, plugged filter or pinched line. Too low, brushes worn. What the correct amperage for a fuel pump? Well, take that fused jumper wire at the fuel pump relay, amp clamp and check it. If you do 100-300 or more, you will know!
Also the check ball can’t seat (most have no spring, only gravity), so leakage and the line empties, extending cranking time even though it runs for two seconds at start. Dirt in pump, filter, injectors and pressure regulator (if serviceable)
So, it is a dirty world, clean it up! Hot water dries quickly and the hole is big enough for arms & towels. Send it back under warranty, it get rejected and you pay. Besides, if dirt, dust is still in the tank, another pump will soon fail! Do it right. Fix the root cause, not the symptom!

DK, ASE master tech since 78

Confirm the concern, locate the symptom and diagnose the root cause! Otherwise, start a list of excuses. Bad part, sun was in my eyes, I wasn’t feeling well that day, I lost my dog, ah, ah, ah, ah 💩 shit!

[omgcheeter]

Great animation. This brings a question. Why do people say that if you let it run down to E it sucks up the bottom
Of the fuel that can contain dirt and other contaminants if it already sucks up the fuel from the bottom to begin with ?

[asimas]

When a car jerks to a near stop when doing a tight turn only to the right, could the issue be with this fuel delivery module? Also, it only happens when gas tank is around 50% or less

[janwrey]

does closing the fuel return line will increase my fuel out pressure and wont mess up my pump?

[larsjoustra]

But how does it use the bit on the other side of the saddle bag tank? Fuel will be left too, how does that work?

[AirborneRenegade]

Imagine having a gas tank that has about a gallon or two gallons left in it at all times because the fuel pump can’t get fuel from it

[praveengupta]

What is the purpose of the suction jet pump?

[mohsenloni]

What software is this video modeled with?

[fahadalfaheed]

I have Kia k5 2021 I been dealing with gas issue so every 50 second drop 2 mile from the gas tank if anybody knows the problems it will be from fuel pump ???

[YvolYT]

Finally a video on where im not confused as hell

[WiltChiu]

1 The Fuel gas tank pump is for vroom. 2 the Sender unit is for clock time gasoline limits

[jerseidepew]

Can someone make one of these for a 05 Chevy Impala?

[yasarcabbarov]

Bəs digər tərəfdə qalan benzin necə olur ?

[karunarathnabandara]

Me oil sump eka ganath video ekak dannakoo

[SaltedCanine]

Are you guys associated with Rheinmetall or did you just use their logo?

[dashtyATG]

Hy thanks for your time I'm getting the following cods P0627 fule pump A control circuit short to ground or fucking open.

Toyota crolla 2020 car started and died.

I've tested every single fuses and wires can someone help.