How To Test FUEL PRESSURE!!

In this video I show you how I was able to test for fuel pressure on my 2003 Chevrolet Suburban. I was using the Harbor Freight fuel pressure test kit which I thought was decent for the price.
**This channel is for entertainment purposes only! Do not do what I do. Do not take my advice. I am not a professional. The methods I use may be completely wrong and/or dangerous. Please seek professional help with anything and everything and do your own due diligence (research). Working on cars is extremely dangerous. I am not responsible for any loss of life or limb or property. DO YOUR OWN RESEARCH. THIS CHANNEL IS FOR ENTERTAINMENT PURPOSES ONLY!**
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[@tellsthetruth894]

I actually dont like you keeping your audience guessing. We come to channels like yours because we may have a similar peoblem to resolve, not to guess or wait for another week or two to get the answer of what resolved it. Good luck to you and to those who want to wait for a week or two.

[@49764tyler]

Shut up ye twat you go make content then

[@bigospig]

Woo-Hoo, Jimmy! So glad to see you got this fixed. I look forward to hearing what the problem was. I figured it was a fuel supply issue, but I'm guessing it wasn't the fuel pump since it was apparently working.

[@adrianh.3090]

I watch this guys channel for entertainment not for educational purposes.

[@carlospajuelo4797]

when i test my fuel pressure on my ford ranger 2002, when the key on i get 20 o 15 psi and it goes down to 0 .when i turn the engine on it goes to to 60 psi ( normal for for a ford ranger), my qestion is the regulator is ok or what, i still have intermintent starting issues ?

[@djmajiktuch82]

@@carlospajuelo4797 From the research I've done on my 01 ranger it appears that your fuel pressure regulator is gone.

[@Geckoste]

Here some specs for fuel pressure from the haynes manual 99-06 Fuel pressure (key on, engine off) V6 engines 60-66 psi V8 engines Vin z (e85) 48-54 psi All other 55-62 Hope this helps someone :p

[@sheputthelimeinthecoconut629]

I used to tell my students “the doors are going to fall off, the headlamp switch will fall back into the dash, and the seat will beak while going down the highway. But your Chevy will always get you home if you have an extra fuel pump or two in the glove box!” Of course we had similar sayings for ford and dodge

[@victorng679]

Good to see you smile again!

[@terryrideout7457]

Thanks guy.appreciate your time .Good video.

[@mrbrown7912]

Fan here. Keep the awesome videos coming. Any input on why the 99 tahoe fuel hand goes crazy?

[@hecmarsmart6509]

Great video brother

[@danhenry4162]

My 99 Yukon did same thing. Replaced fuel pump and was good to go. 👍

[@JOne0442]

Fuel pressure regulator? Thanks for all your videos. God bless you and your wife.

[@Burdain]

Congrats finally got it up and running again. Will I am 100% sure it's the fuel pump. Because I drive GM trucks and that usually what goes bad. About your fuel pressure doing what you see it's normal, It is because the pressure needs to be at specific amount. And when ever it get over that it returns the fuel through the return line. :)

[@UR6]

Strong fuel pump very good fuel pressure at 45 psi . Rev it up little pid it will jump to 49 to 50 or more .45 psi at idle is normal because the fuel pressure regulator doing its job at idle to return more excess fuel in the fuel tank. And congrats

[@VanisleNSX]

Good video, Jimmy. The new California garage looks pretty small in comparison to your old garage in Spokane!

[@randybell2519]

The guage fluctuation is normal. May I suggest you buy a service manual like Chilton or Haynes there is a wealth of information and troubleshooting.

[@HUBBABUBBADOOPYDOOP]

I'm guessing a connection came undone- either the strainer sock or the pump itself. As for the fluttering needle- my '89 Buick OEM setup has a component called a "pulsator dampner" that is inline with the pump. Because it's a "roller cell" design- the pulsator turns the pulses into a steady stream; when the diaphragm goes bad- that's what you get. I plan on replacing my OEM with a Bosch Turbine pump, which is far superior.

[@grendle81]

cliffhanger, good job

[@lawgasman]

Good video

[@usa-thienuongtrenat8292]

Thanks you so much !

[@user-ds8jo6iw6b]

Creative and thank you until the stage of fainting

[@MrEyad1990]

Oh will will WHO KNEW !! Only all of us except you

[@billybrewer852]

The gauge shakes when running because the fuel is moving through the fuel rail instead of just sitting there at a constant pressure.

[@prancstaman]

I had the lines blow off the pump inside the tank a couple of times. Just enough to lower fuel pressure at first and then completely blow off. Gauge jumping around is normal, a sign of the fuel flowing through the lines. Fuel pressure is set at 45 psi for cruise, the fuel regulator has a vacuum line going to it so when you floor it, vacuum to regulator drops to 0 and in turn raises the fuel pressure about 10 psi because when accelerating the engine needs extra gas coming out of injectors. Easier to do it this way because it takes more doing to lengthen the injector pulse and probably create a stumble. Vacuum line going to the fuel regulator is the same idea as an accelerator pump on a carburetor.

[@pauljaragoske3228]

What kind of a jerk makes us wait 2 weeks to find what the trouble was ? I won't be watching any more of your videos.

[@prancstaman]

@@pauljaragoske3228 video is 5 years old. you are a bit late. LOL.

[@clems6989]

Did you remove the valve core from the schrader valve first ?

[@MrDennisLB]

I just had to replace the Inertia fuel pump switch on my 2001 Ford. 20 years and the spring inside got weak. Next will be the fuel filter.

[@Walrus50]

You can pour a little bit of gas in the throttle body and if it starts and runs for a second it’s the pump and my fuel pump on my 01 tahoe went out going up a hill because somehow a wire got sliced in half on the pump in the tank

[@user-eb7dn4ui6y]

Fuel pressure regulator is whats causing the jumping in pressure or a faulty gauge harbor freight is cheap iv gone through several of them

[@nickhyslop5743]

Buy a gauge that you can bleed. Have to be able to bleed the air out of it and the gauge won’t bounce around

[@trainguy1218]

Sounds like: 1) the pressure reg. could be bad. Can you see &/or smell any gas in the vac hose connecting to it? That or 2) one or more of your injectors are faulty & stuck open, so it's basically dumping waaaaaay to much fuel into the cylinder(s) Are any of your plugs carboned up? That could also explain the Vibrating gas press gauge reading. Was any of this close to what you found??? DL

[@ronhowell7958]

the gas in the tank keeps the fuel pump cool running on a low fuel tank can damage your fuel pump. also a fuel pressure switch can cause it.

[@Des420]

I didn't guess it was the fuel pump; I knew it was the fuel pump.

[@connoremms1277]

So what was the issue ? thanks

[@thebrightsideofthepacifici6688]

What is the problem? It seems you did some procedures and in the end you never did mention what was the actual cause of the problem. Do we have to pay in order to get the solution to this problem?

[@pitbulllover6152]

Hey Jimmy. I live in Vegas. Hi, I have a 2000 CLass A Winnabago Sunflyer with a F53 chasis V10 6.8 liter Ford. 2 weeks ago it was driving fine and then all of a sudden the engine stopped running. It will crank but wont start.I checked the relays and fuses, all were ok. I changed the fuel filter and fuel pressure regulator. Still the same symptoms, i pushed on the shrader vale located on the fuel rail and very little fuel pressure was coming out. I dont have a fuel pressure guage and my wife and I are both disabled and cant afford RV tech mechanics at 200.00 $ an hour. Any help or suggestions you or anyone can please give me. Thank you. Oh BTW, I had disconnected the battery earlier and I can see any codes. Where is you next video?

[@MrBigsky13]

You should have answered the question, What was causing the issue. Not make the viewer find the answer in your next video. Myself I will not go looking for the answer. Life is to short to play games with KZbinrs who have so little respect for the viewers. Good luck James.

[@lawgasman]

Thanks

[@MrNickelodion]

i did try with the same gauge, it got me like 10 psi with fuel inside the gauge. i haved to returned it.

[@rayrudd5340]

I had one unit that the rubber splice inside the tank that connects the pump to the fuel line was ruptured

[@woffordsoverlandjourneys8618]

Fuel pressure regulator for the gage issues

[@darnellseals1505]

Really would like to know what was the problem jimmy.

[@brainwashingdetergent4322]

Hell, I tested mine today (‘97 k2500 7.4l) and the gauge rapidly fluctuates 5-8psi with the center being 52psi

[@AF1MIDS]

I can't find the 20% off coupon

[@bigospig]

Texas to Nevada to Washington to California. Are you a fugitive? ;)

[@josephripplingerll5411]

The fuel pressure regulator

[@sidallen685]

Never take anything for granted, when he jumped the fuel pump relay he didn’t check first for power on #30 terminal, how would he know if there’s power without checking first?

[@SwoleDolphin]

he heard it click on my guy

[@unkn0wnus348]

Usually the hose between the pump and the end of the sender

[@robertorivas4774]

What was the problem

[@spencehogg2410]

The vibrating gauge needle can indicate engine problems...

[@randybell2519]

"the guage is going crazy with the fuel pump is actually running" So it was the fuel pump!

[@ryanchenier-poulin8570]

Never got it running ?

[@snortder]

Gas tank was empty and the fuel level guage is typical GM oem crapola

[@BAXMAN68]

Let me guess....the problem WILL be (in the future) the underhood fuse box female terminals for the fuel pump relay where you put a round wire into a rectangle slot to manually turn on your fuel pump. You really should address that now before you have another problem later. Just saying :)

[@edgenet1]

Strange Why would you not check the fuel pressure before you did all of the other stuff.

[@juvinisoto5449]

Yes don’t go by the sound should be 40 up to 50

[@pamelavance648]

Part 2 link

[@jimrbsn]

"It ain't got no gas in it"

[@joewarhammer4093]

Slingblade some people call it a Kaiser blade I call it a sling blade

[@INTERNA9]

WOW

[@Rangerscott69]

FSM is the only way to go.

[@gotcheese9163]

Fuel pump like we have all been saying.

[@MrEyad1990]

I guess the small whose inside the tank is leaking . A common problem .

[@Whoiamok]

You need to purge the air from the tester You can to that with a tester that has the pressure relief valve. Little more expensive, but it's worth it.

[@JrSpitty]

At 50lb of pressure you are going to compress air to the point it doesn't matter. That pressure relief valve is for people who like to remove the gauge without having to crank the engine over with the fuel system disabled to safely remove the tool. I know this because I have one of those high end kits... never have I ever needed to "purge" air. If that was the case you would see a procedure in service manual for this... which there isn't because they know its not a problem and would be incredibly dangerous to do so.

[@lukesutherland360]

The fuel pressure should be between 50 and 55 at idle. Most likely a bad fuel pressure regulator. Very easy to swap out

[@bryandiel6773]

problem is it is either on the fuel rail, or on the fuel pump assemble like on my 04 Tahoe.

[@TheMcs33]

45 good

[@brucejones8847]

Fuel pump issues

[@jessjohn6157]

So its your fuel pump do yourself a favor and get one off rockauto dont get ripped off by the dealer

[@TONYSTARK-jh2wu]

No just get ripped off on shipping

[@biggant13]

Fuel pump....my silverado did the same thing...FUEL PUMP...

[@jewllake]

Regulator.

[@michaelvanfarowe3630]

Its agent Petty from Ozark

[@anotherone9219]

I have an opel z18xe. I repair and change all parts i could imagine. And the car dont work proper. Ill change the fuel pump tomorrow

[@themechanic4222]

Pump turned on doesn’t mean it works 😂. Sometimes they get stuck so they don’t spins

[@YoungerPrice]

Pressure should be 55-58 psi

[@bryandiel6773]

not on Jimmy's Sub, it is E85 vin code Z which is 48-54 psi

[@Reaglesracing44_]

you got a bad fuel pump. i used to work for GM

[@brt-jn7kg]

I having HELL with my 96 c2500 5.7lvortec 5.7l. Ran great before heads were replaced. Now misses at driving range idels great. No vacuum leak,mad,Mas,egr are good. New plugs,wires,caps,and rotor. No codes in the computer. Im completely stumped.

[@markamcampbell6340]

drop the tank.

[@kimcastillo6032]

Maybe fuel regulator some fuel leak

[@bryandiel6773]

easy to check if on the fuel rail. pop vacuum line see if gas in vacuum line...2004 on up fuel pressure regulator is on fuel pump assembly....

[@jeromesmith7349]

I’m lost

[@topnach5324]

To much talkn not enough shown

[@miguelaguilar4821]

THAT FUEL PUMP IS NOT COMPATIBLE WITH GM

[@ACommenterOnYouTube]

Fuel pressure is only half the story. You can have fuel pressure with low fuel flow.

[@west7850]

lol

[@sosnermakaya6227]

Fuel pump weak

[@Bossy23]

Why don't you admit that you didn't get pressure first because the engine was OFF? you didn't tell us what the problem was when you couldn't get reading from the pressure gauge. it wouldn't make you less of a mechanic if you were truthful about it.

[@robertv8851]

Typical it's not aliquid filled guage .

[@HOLYWOODSAINTS]

You don't even know what you talking about you don't know nothing about cars. Don't listen to him if you are learning

[@bjhachannel6747]

ur video no sound bro