How to Test for a Stuck Open Fuel Pressure Regulator! [A ScannerDanner Premium Lecture]

A stuck open fuel pressure regulator can cause low fuel pressure on both return type systems and today's returnless systems

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On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

[tylordupont]

Its crazy but every time i had a fuel issue that i ended up diagnosing it was a dead pump that would not pump fuel, but different circumstances different results, love learning new diagnosing processes, Danner your awesome

[franciscallan]

I have been repairing cars for a over 30 years experience but the way your detailed explanation of testing and verifying your diagnoses is so needed in today's mechanics your a true treasure and thank you for your passion and acknowledging your mistakes thankyou for effort to show process with theory.

[namasteforgetmenot]

Another fine example of the diagnostic process start to finish. Thank you.

[Akadectra]

Thank you for that interesting video. Your book reached me today and I am looking really forward to start reading it systematically and learning from it 👍👍. I will combine reading it with watching corresponding videos on YT. Best greetings from Bavaria/Germany 👋👋

[isalmankhan]

AWESOME👍🏻👍🏻👍🏻
Very important case study👍🏻👍🏻👍🏻
SD please do some more video's with James Danner, it's been a while since we've seen him😍😍😍
Thanks for sharing SD, STAY BLESSED🙏🏻🙏🏻🙏🏻

[djosbun]

I hope the other students treat Dan with respect. He’s no different than any of us and is doing his best to be a great diagnostician. 👍🏼

[calholli]

What I would really love to see from you and other mechanics: is how do you organize, store and travel with all your diagnostic gear? I don't ever see much about this on any of the channels.. I've built out a pretty respectable kit now with a scope and 2 scan tools, and a bunch of banana jack fittings/wire and probes and needles. and piercing probes, etc.. pressure transducer, amp clamps and mulit-meters, etc. and I don't know where to put it all or how to make a mobile kit. I'm thinking about an old suitcase that I have -- or a duffle bag -- or an old gun carrier that has a lot of pockets.. I'm not sure yet. I'd love to see your kit and how you travel with all your diag tools. Are you just tossing stuff on your truck seat and going.. or just throwing it all in a cardboard box, etc? I'm hoping to develop a nice mobile setup that's easy to grab and go and I'll have everything I need already packed. Can you please mention or do a video showing the different ways you've traveled with your gear over the years, and just speak on it a little bit-- what works and what doesn't. I'd surely be grateful for the info.

[mike-ypuk]

Great depth of details for regulator function. Another great video.

[ColdWarVet]

In the rubber wiper blade of windshield wipers there is a long, thin and narrow strip of metal that gives "backbone" to the rubber wiper. Pull this metal strip out when changing wipers, its perfect for cutting into test pins for relay sockets!!!!

[robbieraychannel]

Great video as always Paul, I always suggest using a inline fuse pig tail with a low amp. fuse when jumping relays so if someone makes a mistake they might get away with it. Especially students who may not know the relay numbering system by heart.

[DuaneDonaldson]

Paul, THANKS for bringing this Premium Class out for Public viewing, cheers.

[lupedelacruz]

What a great class Mr Danner thank you and God B U

[carmo]

FYI, the dead head pressure can actually push the rubber check valve in the pump towards the pump, and then you get no fuel pressure at all. Been there done that on a Toyota original FP years ago, yup replacement was necessary at that point. My suggestion is see the pressure and relieve the pressure asap. Never did that again, seen the high pressure and let pressure off back to the tank, but it had a rubber hose.

[johnchambers]

If the spring was not bent it would have rolled during your regulator tear down, thank you for sharing this with all of us! Was that a dorman part?

[TheWalterHWhite]

I always love diagnosing fuel issues (generally). People are so quick to condemn the pump or regulator, and rarely do they test powers and grounds.

This is a soapbox issue for me obviously. Always always always test and/or inspect your P & Gs. Always question why the fuel pump failed. Is this just an old OEM pump, or did it burn itself up?

[gunnar]

I had a fuel pressure regulator pop a diaphragm, and the vacuum line started pulling in raw gasoline until it hydro locked

[irelandryan]

Paul, long time follower. I found a tooling use that is safer than the jumper wire. It's a fuel pump bypass with an Amp loop built in. Made by innovative products of America part number 9038a. Or matco rebrands them.

[Thumper]

5/16 on the hose clamp makes getting tight easy and quicker. Most cheap 5 in 1 screwdrivers are a great tool to have around because when bits removed they fit hose clamps perfect. Also many also have one side the bits a little smaller then other so fits smaller hose clamps most of the time. Standard is 5/16 though.

[zachariajacobussiebert]

Paul thanks for the excellent video, I watch all the time here in the corrupt South Africa. Have you ever encountered a 02071 and 00153, I have 2.0 lt Jetta Mk5 TDI and after having to remove all the relays looking for other faults the wipers stopped working, all programs on utube suggest I have to replace the wiper module or is there away around this, as a pensioner this module is very expensive.

[erick]

A old tech taught me. Hook up a clear vacuum line, sometimes they will randomly leak during operation, and you can see it