Symptoms of a Bad High Pressure Fuel Pump (HPFP)

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11 ай бұрын

The symptoms of a failing or bad high pressure fuel pump (HPFP) and how to tell if it has gone bad.
What is a High Pressure Fuel Pump?
An HPFP is an advanced mechanical fuel pump that injects highly pressurized fuel directly into the cylinders of gasoline direct injection (GDI) engines.
This has many benefits, such as better emissions, improved fuel economy, and more power.
A GDI System Has Two Fuel Pumps:
An in-tank pump that’s pumping fuel to the engine. (40-75 PSI)
A high-pressure GDI fuel pump that’s creating high fuel pressure. (Pressures can go as high as 2,500 PSI)
Symptoms of a Failing High Pressure Fuel Pump (HPFP)
Rattling Noise in the Engine Compartment
Check Engine Light on (Fuel Pressure or Misfire Code)
Hard Start
Stalling
Hesitation When Accelerating Between 2000 RPM to 4000 RPM
Poor Gas Mileage
Low Power
Rough Idle
www.backyardmechanic.org
By using this information user assumes all risk of use.

Пікірлер: 40

@GeeTrieste 2 ай бұрын

This helped a little, but I was looking for a HPFP for a direct injection diesel engine.

@user-pv4hy5fh5q 7 ай бұрын

What would be the pressure of the in tank fuel Pump and the pressure of the high pressure fuel pump for a diesel engine for a pick up truck??? Thank you

@mduduzibhembe9898 7 ай бұрын

Vehicle stalls, invariably, after finishing slopes. Even small slopes. It will stall if you press hard on the gas. Reluctance to move from standstill. Black exhaust fumes. 1AZ engine. Toyota Noah. What could that be? Thank you for this video.

@mcarter234 5 ай бұрын

is the fuel pump connected to the fuel rail pressure sensor

@collieacewhite5108 10 ай бұрын

My car never had a sound coming from it. It was quiet, now I hear noise coming from under the hood. It’s a 2010 Lexus gs350 now it sounds like a sports car when I press the gas. I hear the noise under the hood not from the back of the car. What’s wrong with my car? Can you help. Please explain.

@juanchavez9836 7 ай бұрын

my 2012 regal 2.0l makes a ticking sound at idleis that normal for this ecotec?

@mabasoemanuel Ай бұрын

I have a hard start when warm, smoke and performance is less. can it be the high pressure pump. M57 engine 530d

@user-vy5dh3eo4r 5 ай бұрын

if I have issue with this pump .. its will effect on AFM system ? the car is tahoe 2016

@deontayespight 8 ай бұрын

I got real question to ask how can I get the sewer out the hole on the high fuel pump what if the sewer broke inside of the hole how can I get tha out of there

@user-zt5dy5wl1u Ай бұрын

I have a 2004 Toyota avensis which won't start unless I pour little bit of fuel in the air filter what could be the cause

@dustinnelson4965 3 ай бұрын

Also if you have a bad high pressure fuel pump you’ll smell gas when doing an oil change or on your dipstick

@deontayespight 8 ай бұрын

I have a chevy equinox 2014

@onrokutan 4 күн бұрын

Does that also cuz code P02D0 cylinder 3 Fuel Injector Offset Learning at Min Limit has been detected ?

@patrickcampbell8677 25 күн бұрын

Can it cause it to run and shut off

@albertohart5334 10 ай бұрын

very good video, would have anything to say about replacing the HPFP to make more power in a car? I think mine could be faulty and im considering replacing it

@JasonLee-lv7tm 3 ай бұрын

Hahahaha you obviously never replaced or looked up price

@albertohart5334 3 ай бұрын

@@JasonLee-lv7tm wym? Only like 500 bucks

@dominiczamora3493 6 ай бұрын

I have a Ford 150 3.5 eco boost. Crank no start. Original code was a P0087, i pulled the the pressure line off to see if fuel was coming out of pump in tank, and only a trickle came out when cycling key. I replaced the pump inside the tank, and truck still wont start. Now i have a p00c6 code. Should i replace the high pressure fuel pump next? Resistance readings on sensor on high pressure fuel pump are within specs.

@HVAC_Mechanic 6 ай бұрын

Since the pump was replaced, be sure it is working; if not, check the wiring. If the pump is working, I would check for a clogged inline fuel filter or line.

@alexxpalacios3256 23 күн бұрын

What about if my car is overheating? That’s another symptom?

@beamerandthebeast3979 3 ай бұрын

I wonder.. while driving.. would you have misfires, loud gunshot pops and bang only on acceleration, under heavy load, heavy misfire then code, but on deceleration, sounds normal? Idle also a little choppy, but engine otherwise runs kinda smooth..? I replaced injectors, coils, plugs, checked fuses, tested my low pressure fuel pump, and i have this spare fuel pump, but its used so it may work? Lol find out tomorrow.. Shats your opinion??

@HVAC_Mechanic 3 ай бұрын

Anything I say here is a guess, but it sounds like a timing issue. Both fuel pumps can be tested with an OBDII scan tool or pressure gauge to be sure they are outputting the correct pressure.

@Kandy1979 7 ай бұрын

So my mechanic had unscrewed the bolt on the hpfp and had me turn key and gas was leaking from the hpfp..and he said that if my fuel filter or fuel pump assembly was bad then gas would not reach to the hpfp...Is that true?

@jameshinged3002 3 ай бұрын

If it’s 100% clogged, generally the low pressure pump will pump but will more strain causing premature to both hpfp then low pressure pump, it’s recommended to replace modern fuel filters at 30k miles but can be extended by avoiding gas stations with old tanks and rust particles will develop from the ethanol introducing water into the tank

@JasonLee-lv7tm 3 ай бұрын

Your mechanic sounds like he doesn’t have any of the test equipment that he needs and he’s making assumptions instead of showing proof

@helmanhlayiseko Ай бұрын

Hello someone please help im having a problem , my car has hard start when it just cut it off when the engine is hot , ita very difficult to start what might be the problm

@305jarhead8 Ай бұрын

Obviously it can be many things Check your starter sometimes they get hot and car won't start until it cools down. Could be time to change it.

@modishajobo1284 25 күн бұрын

Hi guys can a bad hpfp seal and cam follower cause fuel to leak in oil?? Because I smell gas from my dip stick but oil levels are normal and I have a oil low pressure signal...kindly point me in the right direction guys....oh its a Mk5 gti

@anthonywood7390 14 күн бұрын

HPFP seals blown. Buy a new pump. Make sure its Hitachi or Pierburg as the cheap ones only last a few months. I tried a cheap one and it failed again after 14000km