What is a Fuel Pressure Regulator? Why does it connect to the Intake Manifold?

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Rob Dahm is a Sports Car Connoisseur. Having a wealth of knowledge in assault rifles, cars, and business advice, this is a one stop shop for any gun loving, gear head, and businessman. Dahm's specialty in cars make for some interesting auto adventures. Building an empire himself, Rob Dahm also expresses his love for business.

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5 июл 2024

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Комментарии : 192

@Salutifer0us 7 лет назад

Rotor, where is the 4 Rob?

@robbob1654 7 лет назад

lol I laugh at this comment all the time

@gt3tunecl725 4 года назад

Now it is here

@Zastava101. 7 лет назад

The end is pure comedy gold

@Grumpycat95 7 лет назад

Rob , where's that dahm 4 rotor ?

@millsy0882 7 лет назад

Yellow Waffle AQ3D iii

@johngoldstien6937 7 лет назад

I skipped around and 4 minutes in it looks like your making a bong haha

@MH-pe8wj 7 лет назад

John Goldstien No its the "Intake Manifold"

@NateSpring 7 лет назад

@4:20 exactly looks like a bong lol

@Velikain 7 лет назад

I subscribed to this channel for 4WD RX7 but now it's like Engineering Explained. But I'm not disappointed.

@RobDahm 7 лет назад

+Velikain keeping people mildly entertained while I build it in secret

@robertwarren2470 3 года назад

@@RobDahm I'm using a tbi pump to a qft bypass reg to a proform 650 does the manifold tube have to used and guessing that tube is on the outlet side?

@miskaa6199 7 лет назад

More of these videos explaining stuff please 😊

@robbob1654 7 лет назад

your video is very informative in explaining that as power changes so must PSI. People who watch most RU-vid tuning videos only understand "oh, just add fuel. oh get bigger injectors, etc". what Rob is explaining that each injector has a sweet spot of PSI and this is crucial for tuning high power engines. this is why "adding big injectors" isn't a smart mod for most of you guys since you aren't properly feeding the injectors with enough PSI and are probably over working the stock pump. "adding bigger injectors" without proper PSI will lead to the dribble, which will lead to idle problems and low end power decrease

@funnydubby6401 4 года назад

Ur partially right, adding a bigger pump and bigger injectors and properly tuning ur engine using software or a standalone ecu or ramping the factory ecu is another story. However, using a fuel pressure regulator, usually rising rate, is a mechanical way of increasing ur fuel that is sent to the engine, so that u dont have to deal with tuning ur engine as much.

@neverstoppulling5169 7 лет назад

Rob you're much smarter than Bill Nye. Don't put yourself down like that

@ashishpatel350 7 лет назад

NeverStopPulling hahahahahahahahahahahahahahahahahahahah only two genders bruh.

@arthurphilips5140 7 лет назад

NeverStopPulling I love your logic

@melody3741 7 лет назад

thatallredheadude yeah im a radical leftist and bill nye is literally just an actor who is vaguely liberal catering to liberals... hes sort of like a science teacher but isnt really either a teacher or a scientist

@SpeedlPN 7 лет назад

Rob is an expert scientist in getting laid and a scholar in secretly building LSX swapped rx7s instead of 4robors

@lobster6238 2 года назад

This is the one of the best explanations on youtube on this subject and I've watched many.

@nodekapunk 2 года назад

A video from the blue garage! What a throw back RU-vid recommended me!

@StasRyadinsky 7 лет назад

First of all thank you, now it makes sense. I had a rough idea of how it regulates fuel pressure but that simple demonstration did it for me. Now second thing is the ending was so immature but funny as hell at the same time haha. Love your videos man. Good job

@zahin8 7 лет назад

This guy can explain hella good

@MAXQ14 7 лет назад

zahin8 and why is it connected to the fuel tank?

@blackviper9392 7 лет назад

Actually learned a lot Rob, thanks!

@JerryJrsGarage 7 лет назад

This video really Dahms it down for me good! Nice work Rob.

@williamburch1321 4 года назад

Thank you for the great video! I loved the illustration as well 😂

@absoluterandom9908 5 лет назад

Great video I enjoyed all of it😂😂 love the way you demonstrated it.

@mosesindecks 2 года назад

Thanks Rob Dahm, that was very informative.

@JustinAbroad 7 лет назад

In this video. rob shows us a bong he made out of a 2 liter bottle and one with a water gun

@iGThomas 7 лет назад

Very Educational Thank you Rob

@borderex9993 7 лет назад

Good job explaining this Rob !

@CarsSupercars 7 лет назад

Hello Rob, Nice video and keep up the good work...

@ashleymorales3162 10 месяцев назад

awesome man, great work

@t1995roger10 7 лет назад

Can you explain an oil catch can, and will I need one for my upcoming boosted ka?

@jeremygriffith8797 7 лет назад

The end was the best

@deadchesh951 5 лет назад

You have such a pleasing voice

@LJRossPhoto 7 лет назад

Very informative! Great video man

@tonijohnson09 3 года назад

Love the video. Going to add an aftermarket fpr to my 4AGE.

@RebornOps 7 лет назад

Dude I think mine went and and just as I was thinking about it this video came up, I didn't know what it was until now, thanks so much!

@Alvesr2099 7 лет назад

Awesome video

@BitchyBoxxy 7 лет назад

In this video, Rob Dahm test his boosted water weapons for an attack against Rob Spaghetti's noodles.

@Fedgery007 7 лет назад

Great explanation!

@Kato1559 3 года назад

I needed this explanation

@stephenrogers5386 6 лет назад

Helpful video!

@serkanhoca3457 4 года назад

Rob we are learning with you bro, thnx a lot

@DREAMS2REAlITY 3 года назад

I love the fact that even tho I watched this a few years ago when it came out that as soon as I saw it I had to watch it again.

@DailyElectrician 7 лет назад

awesome video, lmao another gold ending!

@motaku_th 7 лет назад

Holy shit that was unexpectedly educational. Very well explained. Thank you.

@nombr 4 года назад

Good video, do fuel regs play the same role in turbo two stroke applications?

@dannystutsman7636 4 года назад

Informative

@Diogoneves1987 7 лет назад

Thank you for the explanation! keep up the good work and when u can please let us know how the 4rotor is doing! best regards from Portugal!

@diogocardoso1948 7 лет назад

Portugal 🇵🇹 Pensei que era dos unicos

@Zirushi 7 лет назад

mais um aqui.

@diogocardoso1948 7 лет назад

André Pedrosa hahah 😂 estamos em todo o lado 😂

@TheMagalhaes24 7 лет назад

Os tugas estão em todo o lado ;)

@brewera71 7 лет назад

Hi, I'm rob dahm. I'll never get over that

@2326TOM 3 года назад

Thank you mate. Great video Hay, can you tell me how can I find the correct fuel pressure should any vehicle has? where online can this info be found.

@ghostwarhammer007 3 года назад

Good, suscribed

@thewespaul6520 7 лет назад

Next week by Rob Dahm: what is a steering wheel and what does it do??!!!

@robbob1654 7 лет назад

the wespaul LMAO!! roasted 😂

@RobDahm 7 лет назад

I was going to do "What is a gas pedal" next lol i started the channel with simple videos like this and i enjoy going back to my roots. if it helps someone then im satisfied. Obviously not going after the big audiences with videos like this.

@thewespaul6520 7 лет назад

Rob Dahm or are you out of video ideas? Finish your car Rob.

@boostedone1367 7 лет назад

the wespaul and why is it connected to the steeringrack?

@brandondeel3567 7 лет назад

Rob Dahm would you like to enjoy your fried chicken after its been in the fridge for a day? let me show you how...

@ra1ny26 7 лет назад

Next video, what are tires and why does a car need them lol

@6loc9gaming51 6 лет назад

Is fuel regulator can install into a carb engine?

@The_JDM_Dynasty 7 лет назад

Love the water gun Rob.

@xBigjointrollin 7 лет назад

Hello rob i wanted to get into rotary and i got a question, how many miles are the apex seals good for before i should change them?

@LordSeemz 6 лет назад

so glad that bottle bong was at 4:20

@peterfrancis3865 Год назад

Nice 👍

@enlightenedrenegade472 7 лет назад

We need a Rob Dahm aesthetic appreciation day. Seriously. This man is attractive. God damn it. And fine. I'll continue the meme. Rotor 4 is the where, Rob?

@paperplanesparadise355 7 лет назад

Every time I asked the car accessories shop people, they can't explain a thing, thanks for sharing.

@user-ql6by8cy9s 4 года назад

What happens if u plug up the vacuum line on the fpr

@brandonjohnson3566 5 лет назад

The ending was priceless bro. I was drinking water when you said that's totally after sex and laughed so hard my mouth became a fuel injector. XD

@flinch622 6 лет назад

Bit long, but referencing the regulator to intake vacuum instead of atmosphere provides some flow modulation in that it swings the effective setpoint of the regulator on demand tweaking lbs/hr available from the injectors. A sensor mounted on the fuel rail referenced to atmosphere would show pressure changes as engine demand went up and down.

@andrespareradeniz9797 2 года назад

Hello from Argentina! Great video! I first want to say that I'm really new on EFI, I'm trying to learn to convert an old carburator car and I know I can really sound like an idiot with my question.. but what I don't understand and I would really appreciate your comments is what about the regulators without the vacum/boost port? For ex in the case the throttle is closed you'll get a higher dP through the injector and that means higher fuel flow on the same injection time than the rated dP. is there any way to compensate with tunning? lowering injection time? Thanks in advance!

@AK-ic1yj 2 года назад

Ah wake me up before you go go!! George Michael is so hot working on car engines!

@lucilledog8832 7 лет назад

Where do you load the weed?

@rosegold-beats 7 лет назад

the title says it all lmao

@Demolidor4ever 6 лет назад

can i use this on stock injectors?

@Mat99TN 7 лет назад

I have a question Rob, what bringed you into cars? Following from Italy^^

@willischan3969 6 лет назад

Pls correct me if i am wrong; Injector is not inside the cylinder(located behind the vavles) and hence no pressured air would block the fuel injection.

@Iucien 7 лет назад

I always thought the vacuum line was teed into the system only for the "rising rate" fpr's that raise pressure when in boost. Wonder how a rising rate fpr is mechanically different.

@kimmadsen4893 5 лет назад

I diagnosed my bmw e46 318d. And it said fuel pressure regulator cuircut low. I didnt have the diagnose thing before. But i car suddenly got super slow but wasnt in safe mode. So i thought it was the turbo and changed it. But the car was still as slow as it was before. Then i diagnosed it

@RuinedHemi 7 лет назад

My turbo slice still hasn't arrived who do I take that up with?

@turbo_lerssi1083 7 лет назад

i had never thought of that. i mean i figured it was something like that when ypu made the bong, i mean water gun, but now i know that

@MeaHeaR 2 года назад

é MoiśT Power-Phull Explain-Ásiân 👍👍👍

@jessisanturo 6 лет назад

Bicycle inner tube valve stem . I think he said bicycle pump gauge . We all know what he meant but just for the record .... not trying to be a smarty jack just clearing. Nice vid .

@BenPortermike 7 лет назад

i climbed the wu tang mountain and i asked the Dolly Lama where the rotors at. he answered: rob is the 4th rotor.

@twotimes2099 7 лет назад

why's rob making bongs?

@OfficialAPD123 7 лет назад

Next episode, the engine and what it does.

@scottmcbride2237 3 года назад

So does this also include carburated vehicles. Cause I hardly ever see this on a carbureted car.

@astroblue6207 Год назад

How does the vacuum line hook up to the fuel regulator? Does it come from the factory assembled wrong?

@rambow70 7 лет назад

Explain how a squirt gun works.. Or magnets!

@LeZturbo 5 лет назад

What I don’t understand is that on a turbo car manifold pressure will be positive whereas on a non turbo it will be a depression. After market pressure regulators don’t mention turbo or non-turbo

@tnainio 2 года назад

If the fuel comes in from the fuel rail on the left, and the regulator lets fuel go through it and back to the tank if the pressure is too high, then what is the pipe below the vacuum pipe on the right for..?

@felipebutcher 28 дней назад

i love you

@daevid21 7 лет назад

"Intake minfold " looks just like a bubbler lmao

@DukeNuggets69 7 лет назад

What is the purpose of a mustang? Driving or Killing? Why is it linked to car meets and crowds?

@nathangelios9477 7 лет назад

so you have to have more fuel pressure than boost pressure?

@Tokyodriving 7 лет назад

Dahm, the 4 Rob rotor is where?

@MichaelGawesebmainone 4 года назад

I get F1007 and F1014 codes still searching what they mean. Somebody suggesting it may be crankshaft or timing issue, maybe crankshaft sensor, but I doubt car could be out of timing as it was not opened. Someone suggesting it’s a fuel problem perhaps too much fuel. It’s a Peugeot 207, any idea where to start?

@jakefriesenjake 2 года назад

Basically, the regulator maintains the 40psi differential. If the intake was pressurized to 20psi from a supercharger, the regulator would sense that 20 psi, and then automatically adjust the fuel pressure up, by 40psi (60psi in the fuel rail total) .

@chrisbeamish6556 7 лет назад

You trying to explain this with pop bottles and squirt guns is comiccal

@remyche8768 3 года назад

Would a old fuel pressure regulator cause a hot start issue? Turn car off and fuel up, pay for fuel come out won't start

@Verybadbiker 7 лет назад

Hi, I'm not Rob Dahm

@nicoleibundgut534 5 лет назад

How would that szenario change if it would be a n/a engine?

@Meyersmanx1 5 лет назад

It really doesn't change, vacuum from the intake manifold still creates vacuum, the FPR still senses that vacuum and adjusts the fuel "take or put". When you hit the throttle under acceleration the intake creates more vacuum, the FPR sees that increased vacuum on the diaphragm inside the FPR. The diaphragm moves allowing more fuel (in aviation we call it "putting"). When you take your foot off the throttle, the intake draws less vacuum, the diaphragm sees Less vacuum then reseats and "puts less" also referred to as taking. Rephrased putting is putting in more fuel to the injection or carb, and taking is taking fuel away from the injection or carb. Adding a turbo Just increases vacuum and so increases the put. Does that make sense?

@chrisbeamish6556 7 лет назад

As my friends call it the fuel spray thingy