Fuel Pressure Relief Valve - WHAT YOU NEED TO KNOW!

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The fuel pressure relief valve - also known as the fuel pressure regulator on a common rail diesel engine - can become a weak link on a performance-tuned Duramax or Cummins.
The valve dissipates fuel pressure to prevent overloading the fuel system. After some time, the valve weakens and may drop fuel pressure when it's not needed and cause a host of problems. A weak valve can trigger engine codes P0087 or P1093. It may also be responsible for excessive smoke, poor driveability, poor mileage and a loss of power.
In this video, Duramaxtuner's Scott Henricks and Nick Priegnitz talk about the benefits of the aftermarket replacement valve. The cost is minimal compared to what a faulty valve can do to the performance and driveability of your diesel vehicle.
duramaxtuner.com/fuel-pressure...
Calibrated Power Solutions Inc. is a data-driven, market leading tuning business. We are dedicated to providing high-quality engine calibrations that represent the best mix of drivability, reliability, and power available within the performance automotive aftermarket. We keep our edge by encouraging innovation. We drive and verify results by employing expert staff, who are equipped with the best tools in the business. We view ourselves as prompt, reliable professionals who deliver. CPS aims to establish a nationally recognized standard in our market for product quality and service delivery.
About our Tuning: Balancing power, heat, drivability and efficiency is something that takes time and a solid understanding of engine dynamics. Those who plan on running their trucks loaded for an extended period of time should take care to match their tuning and parts close to the application. Duramaxtuner.com understands your need for reliable, powerful, and consistent power delivery. We've designed our business and facilities around making it a reality. Contact us for custom tuning and parts combinations geared to your needs.
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11 янв 2015

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Комментарии : 260

@darknitelmm6245 6 лет назад

Put this on my 07.5 LMM holy crap this made a big difference in how my truck ran!!! It even shifter better!!! I did however crack a rib getting it loose so I believe Sasquatch put mine on! 😂 but I’m good now

@stevewaclo167 7 лет назад

Good video! I know an even smaller part that can cause grief, the injector check ball! 😄

@markh.2899 4 года назад

I just replaced this valve in my '07 LBZ at 114,000 miles and before the codes had a chance to appear - preventative maintenance pays... Thanks!

@saltysteel3996 4 года назад

Used a regular 18mm Craftsman wrench. Used the boxed end on the wrench. Tapped on the open end of the wrench with a brass hammer. Tap tap tap until it came loose. Installed plug same way. Tightened by hand as much as I could, then tapped it over a quarter turn with the brass hammer.

@tristanzimmerman2262 Год назад

Where is the location of it

@ivanlavrishin9384 6 лет назад

I have a cummins 6.7 and had this issue on my truck. Took it to a mechanic here and told him that I don't have power when towing my 5th wheel and check engine light comes on. When driving without my trailer the light disappears after a while and i can go 70-80 mph. Hook up my trailer i can't go faster then 50-60 mph. He counted figurer out what was wrong. After watching this video i decided to pay the $40 with shipping and order this and replace it. Its been 2 weeks now and I'm hauling my trailer with no problem and its running well. Thanks guys.

@thegingerbeardman4845 3 года назад

I had a 6.7 Cummins in the shop that ran away on the owner from oil in the intercooler after he replaced his failed turbo. He had installed a rail plug at the same time. Turned key off, Injectors turned off but engine running at 5-6k rpm and no where for the fuel pressure to go. Yeah bad combo, blew the pintle out of the ends of 4 injectors and cracked the tip of the other two nozzles! I install these plugs and believe they are safe 90% of the time but beware that if your truck engine were to run away and the injectors are off they will be destroyed and so will your cylinders. I have seen and heard of lots of engines having run away following turbo failures when the intercooler doesn’t get cleaned/drained/replaced. (Not under my care). Generally they shut back down after a minute or so and the engine survives. Point is in the case of my one customer the factory relief valve would have been the difference between a 60k mile motor living on instead of catastrophic failure.

@Waldek77 Год назад

Thanks for the video Regards

@Carlitosway211 8 лет назад

Got a customer that installed that plug on his truck due to the P0087, he cleared the code with his tuner... Light came back on.... P0087. Woohoo!

@rootedflunky1 6 лет назад

Thank you

@lukefarmer5391 2 года назад

Yep, used one on my cummins and blew the top off one of my injectors.filled the motor with fuel. I was towing at night and in the rain and never knew it happened until my idiot light was going off and I looked and had no oil pressure. The oil was floating on the fuel and blew out the breather. Good thing, no hydro lock and motor is still ok. Reinstalled stock valve. Be aware. They are there for a reason!

@fdn432051 5 лет назад

so my question is i drive my truck daily and mine just did this so i parked it and i believe this is the issue but if i put one without the release valve like yours don't i risk my injectors getting over pressured and blowing up? also does my fuel economy go down because it blocks the extra fuel going back to the tank or does it not block that?

@heberclementiii6788 6 лет назад

Thanks for the info. Are you going to to a video on The 2011-2016 LML Exergy Fuel pressure regulator? Also what’s your thought on that as far as is it worth it if the CP4 lets go , will it help? Thanks

@Fabian-ku4vi 4 года назад

I have a 2015 6.7 Cummins, do you need to release any fuel pressure from the rail before removing stock plug?

@mikef6706 3 года назад

I had this code return today P0087 w/Low Power Mode. This happened while towing 9,000# 5th wheel. Fuel filter was changed 2,500 miles ago. TP3018 GM Filter Thoughts?

@juancabello7711 3 года назад

Will having the stock plug on have to do with my ac compressor shutting off I have a early 04 lb7 and I realized every time I step on it my compressor shuts off.

@patmaison2475 7 лет назад

do you ever see a fuel leak at the hpp from the vacumn side

@KenyonPayne 2 года назад

I have a Volkswagen Touareg 3.0TDI with a cp4. I occasionally get a p0087 code & the truck starts to surge. It'll smooth out on its own after about 20 seconds or if I tap the throttle. Would this be the relief valve or the regulator valve on the cp4 pump?

@kyleneal3472 5 лет назад

I know this is an older video, but I did this fuel rail plug. And than I bought a ppe ported fuel rail fitting. And that ported fuel rail fitting leaked fuel like crazy(while I was on a trip with my fifth wheel camper). Luckily i swapped my stock fitting back in, but I’ll still get that low rail pressure code if I horse on a high tune. Did I do something wrong or should i drill my stock one out(ppe fitting has 3 or 4 threads showing)

@dustingillard6987 4 года назад

Lots of questions about LMLs I have 2015, same problem, but cant find any videos It's on the front of rail drivers side The back port is a sensor, the front is valve I cant find anything on how to get in there, may have to take EGR off

@calebbroege1333 5 лет назад

Im seeing slightly low rail pressure at WOT truck always only makes 21k or a hair more but is demanding more. Has no problem getting to that 21k. Do you think my PPE rail plug not being torqued hard enough could cause this? I was not the one to install. Truck makes the same rail pressure on each tune and still has plenty of power. What gives

@newlion7013 7 лет назад

What about the valve on the passenger side?

@ramironajera1884 3 года назад

why my 2015 chevy silverado 6.6 only gets 1200 psi on fuel rail sensor and wont start in till i spray starting fluid in

@The-real-CrackerZack 6 лет назад

Can it be tested at home?

@user-ki8nw5ki5o 3 года назад

I was always told to replace this stock valve with a fuel rail plug?

@tonynewsomjr.4043 6 лет назад

Why does this not apply to lb7? I just had my stock bosch injectors replaced and they said they were going to do this part as well and im pretty sure it shows on my invoice

@hardhead7056 4 года назад

Lb7. Zf 6speed. Is it a more tense scenario? Multiple revs up and abruptly down again at full throttle. In rapid succession. Maybe the sprung version of the plug is more desirable??

@Duramaxtuner 4 года назад

We have never had an issue.

@bobreichel 8 лет назад

I have a 2007 classic 6.6 Duramax Chevy Silverado and I've had this code show up while towing my 25 foot Pro-Line boat will this help and will it damage my stock engine. it had only thrown the code and went into limp mode when pulling the boat up a steep hill or Mountain.

@juanitabucio7519 4 года назад

Did you get it fixed because our truck is doing the same did that take care of the problem

@joshuas10 7 лет назад

Do you have to have a tune to be able to use this?

@Duramaxtuner 7 лет назад

No. No tune necessary.

@markhall7735 3 года назад

I have hond civic 2.2 cdti trying to get power up hits 220 bhp get low rail presser P0087 Do you do upgrade valve I have all so looked to get fuel pump upgrade but can't find bosch agent that upgrade it Or aftermarket pump Only can find for VW bmw do do pump upgrades?

@guillermogarcia1415 4 года назад

How l can get one for 2012 GMC sierra daneali 6.6 diasel turbo

@1ethanb 2 года назад

I have a zd 3.0 common rail patrol 08 can I get this in Australia?

@brydbox8943 4 года назад

How to replace a fuel pressure regulator on a 2002 freightliner sprinter

@duanedevalkeneer9652 8 лет назад

You don't show where and how to replace on a LB7, 2002. Please do ASAP, thanks. Duane

@Dlascwbysfn14 5 лет назад

Yes it does. It is under the turbo horn on LB7.

@charlottespeer6239 5 лет назад

would it be a good idea to put this on a bone stock truck?

@Duramaxtuner 5 лет назад

Yes! Nothing to loose and everything to gain.

@damianfigueroa2292 5 лет назад

could I do this to a transit mk7 with the puma 2.4 engine? My fuel rail pressure drops constantly when engine is hot

@Duramaxtuner 5 лет назад

No idea.

@57NUPE 3 года назад

Hey Guys, I have a 2006 Duramax LBZ motor with a bad fuel issue. I can drive down the road and the engine will just cut off. It’s like the fuel pump loses signal and the engine will just stop running. I put it in park, turn the key off and restart the truck and its like it never happen until it does it again??? Lately I have been getting a 0088 code fuel rail too much pressure code and I will clear it and it goes away for a while, but it resurfaces. Can you let me know what the problem is?? Could it be the sensor in this segment??? I want to know before I have to take it to the dealership and pay an arm and a leg!!! Thanks!!!

@jeromevandervelden3041 9 лет назад

I have a stock LBZ engine No tuner. do not have any fuel rail code or pressure codes. Will replacing fuel pressure relief valve do any damage? Will it improve drivability?

@Duramaxtuner 7 лет назад

We've installed thousands of these fuel pressure relief valves without any issues. It may improve your truck's driveability if you're experiencing problems now.

@velocity800 5 лет назад

Does this part need tobe maintained? I mean take it off , spray some cleaner and put it back thing??

@Duramaxtuner 5 лет назад

No, just install and go.

@logansdiygarage7337 4 года назад

What about code p0088? Will this fix it?

@Greengulchleaves 4 года назад

"$50 part" meanwhile on a 24 valve it's a $300 part and does the same exact thing...I love my Cummins and all, but sometimes man

@mikef6706 3 года назад

What is the torque spec?

@ryanfunk1180 3 года назад

Really struggling with the removal of the fprv. Any suggestions?

@Duramaxtuner 3 года назад

Breaker bar.

@agordon7369 7 лет назад

Is the relief valve an issue with LML models, I'm getting ready to do a full delete and I don't want to create any issues with the added power. Granted I'm guessing around 200 horse and 400 lbs of torque increase, but like everyone else I'm looking for better economy and reliability as well.

@Duramaxtuner 7 лет назад

You really need to talk to us before you delete your emissions equipment. Click here and we'll get back to you ASAP: goo.gl/SBPty9

@grixvarilla8144 3 года назад

Hello is this also available for the isuzu dmax with 4jj1 engine? Thanks a lot

@Duramaxtuner 3 года назад

Not sure.

@isaccmartinez6533 3 года назад

Quick question. Is it ok to install this on a completely stock lly duramax?

@Duramaxtuner 3 года назад

Yes it is.

@ChevySilver 2 года назад

Will this solve a p0191 code? I got perfect fuel pressure on my scan tool. Does this work with the LML rails? I had this code before I did the cp3 conversion and a fass lift pump. My cp4 didn’t have any metal and never had an issue with it. I only didn’t the cp3 conversion for a peace of mind.

@cesareliel4797 2 месяца назад

I have the same problem my cp4 fail and changed. You solve this issue?

@100LL81 6 лет назад

Thanks for the video. I'm new to the diesel world and have been stressing a lot about putting this plug in my truck. It's a stock 5.9 cummins. The price of the valve is nuts compared to this plug. I was worried a lot about damaging my brand new injectors but your video has put my mind at ease a lot. Cheers from Canada.

@Duramaxtuner 6 лет назад

Thanks for the comment.

@larryspires8615 3 года назад

I have a 2011 duramax 6.6 that is having these issues but looking at the end of my fuel rail on driverside I see a electrical connector. So any advice?

@nickpriegnitz5895 3 года назад

2011 uses an electronic relief valve. It's a pretty robust design unless debris goes through it (in which case you've got bigger problems).

@mikeync9288 6 лет назад

I'm getting codes P000F and P1011. Will this help me on a stock 6.7 cummins?

@Duramaxtuner 6 лет назад

Please give us a call tomorrow so we can ask a couple of questions - 815-568-7920.

@tonybarnhart7347 3 года назад

Could this make a crank no start on an lb7 it was running great then gave it two sharp rpm revs then it died and won't start

@nickpriegnitz5895 3 года назад

No, but there are a multitude of other fuel starvation points that could. Log rail pressure vs desired rail to determine if it's fuel system related.

@coltonsmith3397 5 лет назад

I have a 2001 lb7 and I have black some under regular driving not a lot but some could this be the issue

@ball-se6gu 5 лет назад

Lb7 has no rail pressure relief valve. Check air filter, check for boost leaks, check your turbo wastegate, if all are good, check your injector balance rates. You'll find your answer fairly quick.

@daltonbeal1720 3 года назад

Does an lb7 have this on the fuel rail too? Or it it only the one in the valley?

@Duramaxtuner 3 года назад

Just in the valley.

@KX250Frider4 5 лет назад

I’ve got a p0088 code, could this possibly be my issue??

@ronnierandolph3056 3 года назад

Did u fix that code mine is throwing that now

@nathanrobbins5315 6 лет назад

I have an 06 3500. I get a ticking noise for a couple seconds then truck blows white smoke then it goes away. Could this relief valve cause this to happen if it's bad

@Duramaxtuner 6 лет назад

There are a few things that can cause those symptoms. A new fuel pressure relief valve is a good idea, for starters. Can you call us so we can help you kick around a few other ideas? 815-568-7920.

@robertsmith3445 5 лет назад

Can I use it on my 2004 lly stock

@davidk7037 5 лет назад

Robert Smith did you try this method and did it work?

@badassYJ69 4 года назад

I watched some videos on these and couple places said that they have seen nuts and fittings blown apart when you let off the throttle. I have a stock 05 lly, I don't have any codes yet but thinking the spring in my rail plug might be weak. Would this be a good idea for my engine since it still runs on the stock tune? Only thing I have done is install a fass95 pump and s&b cold air intake system.

@Duramaxtuner 4 года назад

Yeah do it. For $50 you really cant beat it.

@badassYJ69 4 года назад

@@Duramaxtuner I got one with new seal from ppe for $31. Now gotta figure out how to get the glow plug module bracket out of the way. Can I cut it and relocate the module or is that bracket grounded?

@gerhardbueckert5837 5 лет назад

I have a 2006 LBZ Duramax I have idle issue when I put it in reverse or drive or AC on it runs good but if I put it in park it idles up and down could this be the problem?

@cesarmolina2625 4 месяца назад

I have this issue did you ever find out what it was? Lly on mine

@leviblagg9784 3 года назад

I have a P0088 and my rail pressure bounces. I run a sump to airdog 200 and I replaced the fuel pressure regulator but still has high psi on start up and the drivability is here and there until eot is normal. She also bouces at idle from 5-10k psi on the rail.

@Duramaxtuner 3 года назад

What year Duramax is it?

@rubenarchuleta-yz1sg Год назад

Did you ever fix the p0088 issue? I'm getting the same code. Thinking you might be able to help

@bbad9105 Год назад

It was my pump going out. I fixed it by replacing all my injectors, tubes, and installing a rail plug and 12mm injection pump. She doesnt see below 14psi. I have an inline psi guage before my injection pump and my mm3 shows my rail pressure.

@megasheepshagger 6 лет назад

Put the plug in my ‘11 cummins. It did away with the ‘burping’ after pedaling under load. So far so good. Had to remove intake horn, took about 1hr. $10 part ***quick update: I spoke too soon, still having the issue. I will reach out to CPS once more.

@chrisulloa8697 5 лет назад

My 2009 ram 4500 is smoking and throwing p1011 codes and the p000 one .. is this the issue ?

@nelsoncitizen4689 5 лет назад

CHRIS ULLOA

@maxxonetwo3 5 лет назад

I my truck is 2014 Dodge Ram 1500 4.7 gas engine ..I don't know where my fuel pressure relief valve is. Can you help ?

@charlottespeer6239 5 лет назад

I think this is for diesel engines only but I could be wrong

@TheMeanGreenDetroitThing 4 года назад

Just had a issue today. Had to get on it hard to get out into traffic. Let off at the next light to turn truck shut off cranks but no start. Basically bone stock 05 LLY changed filter and water sensor now is it possible this is the problem.

@Duramaxtuner 4 года назад

It's possible.

@romellarches9167 Год назад

These parts got me a headache, and my CRDI engine always gets hard starting 4 to 5 cranks before it starts, these tiny parts is very important on common rail diesel engine.

@Duramaxtuner Год назад

We feel that

@homesteadingsurvival3560 4 года назад

Here people talking it went to limp mode my just stoped an won't start do they do that to

@tonyturner779 6 лет назад

What about the risk of blowing off the injector tips because now you have no way to vent the pressure which is how the system was designed?

@andrewfarrell4312 5 лет назад

Tony Turner the rail plug they sell still operates as a relief valve. However it is a higher quality and a little stronger

@ericmartinez5633 2 года назад

@@andrewfarrell4312 no thats definately a plug.. not a sprring

@cowboytrevor21 8 лет назад

pretty sure i need this. i have an 05 lly bought in march. to the best of my knowledge its still completely stock. but gets 20-24mpg highway and 18-19 in town. twice now ive had where i was stepping on it going up hills and it throws the fuel rail pressure code. only up hill for some reason. then it limits itself to 65mph until i pull over and turn off. this last time was going onto on ramp and had two semis in the other lane not letting me over so 0-70 by the time i hit the top and i could feel the truck slow to 65mph

@JDHitchman 8 лет назад

+trevor randles First replace the fuel filter, if that does not stop the P0087 code then you might need this plug. It is only $50 and takes about 30 minutes to install. My 07 Classic LBZ reached a point where it would throw a P0087 at anything over half throttle. Installing the fuel rail plug cleared up the problem instantly.

@michaelalexander8568 5 лет назад

I use to be able to smoke the tires at a light. Now nothing. What do you think?

@Duramaxtuner 5 лет назад

Boost leak or dropping rail pressure would be the most common reasons for a loss of power.

@hardwickeds 2 года назад

not sure if this thread is still active.. I have a 2005 lly engine code "2" my truck will go into limp mode and not let me go above 65.. and damn near nothing with my 5th wheel. New fuel filter. It never throws any codes though?? I was thinking of doing the FPR but maybe this is what I need? or both? truck is completely stock.

@Duramaxtuner 2 года назад

Have you scanned it for codes? It may trigger a code but not throw the check engine light.

@turneynicholas 5 лет назад

Does the trans need a relearn after this

@2015_Rubicnn 4 года назад

This has nothing to do with the transmission.

@2ndAmendmentGlock 3 года назад

This part is impossible to remove. The company that made it was so cheap they couldn't let the threads stick out just a few more mm. I'm considering removing the entire fuel rail just to get to this part.

@TheShane1230 6 лет назад

What could cause similar issues to this on a LB7? Got my LB7 tuned and it ran great for 2 weeks, now it keeps throwing a P1093 code and the fuel pressure drops significantly WOT. The second I let off the throttle the fuel pressure jumps up to where it should be. When I give it half throttle it runs as it should

@Duramaxtuner 6 лет назад

We may be able to offer a few other ideas - why not give us a call - 815-568-7920.

@davanteedow2025 4 года назад

Did you figure out what was going on my lb7 is Doing the same thing

@charlesdaugherty1691 Год назад

I have a 03 LB7 with a Fass 100 lift pump on a new motor with 1200 miles since dropped in.Motor shuts off no codes.Cranks right back up.Any clue

@robo580able Год назад

My MP8 mack/volvo engine which is a 535hp engine and it is having boost issues, flat out getting to 200kpa then outta the blue it will boost at 260 and runs like a dream,if I stop or slow down it will drop out and go back to 200kpa. Could be the issue

@Duramaxtuner Год назад

You need a shop to take a look. We would need to get our hands on it to find the issue.

@josephwhite800 3 года назад

Better than putting a plug on is putting a single stage relief with high pressure release so you still keep a safety for fuel pressure. New BOSCH rail pressure relief valve modified for single stage operation. This valve corrects a common issue of rail pressure fluctuations and drive-ability issues inherent with the stock valve. In stock form the valve is a dual stage design, where once the valve opens due to system over pressurization it remains held open until the pressure lowers below the second valve stage. Typically the opening pressure is around 220 MPA or 2200 Bar, and the second stage holds the valve open until the pressure falls below approximately 65 MPA or 650 Bar. Once modified to single stage operation the valve will then regulate pressure at a constant single setting. We offer these valves set to various opening pressures ranging from 180-210 MPA (application dependent).

@bluesoulone 2 года назад

Is the a cheapish single stage anywhere to be had? If not what is the scope of modding the Bosch?

@jonathoncatterson8901 Год назад

Ya where can we get the valve from?

@ismaelflores5233 5 лет назад

Does the LML has it too?

@Cumminsmcgee 5 лет назад

I'd like to know also

@MrJesseevan 4 года назад

Anyone get a answer to the lml

@joe212 7 лет назад

whats it do for mid range power

@Duramaxtuner 7 лет назад

Click here and we'll get back to you ASAP info.calibratedpower.com/we-can-answer-that

@drewk5929 3 года назад

What is the risk though of this plug not able to relieve the system? The injectors? Thanks

@Duramaxtuner 3 года назад

We literally have never had an issue due to running the plug.

@drewk5929 3 года назад

Ok thanks

@jordanwhitehead4618 6 лет назад

04 LOT I have an issue. P0700 and U0101 loss of communication with TCM to ECM. Symptoms are: when driving going into 4th gear its like it skips a gear or goes into limp mode but pulls out in five seconds and shifting is good until going back through the gears. Checked pins on TCM checked grounds I could find. Replaced input speed sensor to trans. Replaced NSBU module......Does ANYONE have an idea on why this is happening?? I'm stumped, research online shows little like I'm the only person with this issue. 🤕 please help I can't bring myself to take it to a dealer. Have taken it to 2 diesel shops where I know the guys and a recommended trans shop. Very helpful but all shoulders on what the issue is...

@badchristiansen 6 лет назад

Try replacing the TCM with new unit. It will require a flash from a tech2 scanner to work. This fixed my code p0700 issue.

@gaiadi0z 6 лет назад

Today I got the p0087 while towing and forcing the truck abit uphill and truck went into limp mode, is there any risk on replacing stock valve with this? I drive a 2012 ram 3500 6.7 full stock.

@taylorhowell9933 4 года назад

Daniel had the same exact thing with mine. 2011 ram 3500 after I deleted! Had p0606 on key code read and 0087 on a scanner. Shimmed the stock plug and no issues since. Would happen pulling 40 foot horse trailer merging on to on ramps or going up hill at a slower speed then having to ask for more going up! Til i figured it out if I pulled over and shut truck off and did the key trick to read and reset codes light would stay on but regained power. Light would go away when I unhooked from the trailer and drove a minute. Was really frustrating and annoying

@michellejohn695 7 месяцев назад

Taylor,can you explain the "key trick" please?

@shawnhartling1551 3 года назад

How about on a 3116 cat engine

@emmanuelmunozvargas3523 6 лет назад

Is there one for an lb7?

@PGFuelInjection 5 лет назад

Yes but it is in the function block with the pressure sensor and not in one of the rails

@sammybolos6482 3 года назад

So is this the same as a “”race plug””?? Or is this basically a preshimmed plug ?

@Duramaxtuner 3 года назад

It's a race plug.

@redneckoriental 3 года назад

"The fuel pressure relief valve - also known as the fuel pressure regulator..." A fuel pressure relief valve is not the same as a fuel pressure regulator.

@BlondeWick 3 года назад

Especially considering duramax engines have always (since introduced) used CP3's which have, a fuel pressure regulator, and further downstream a fuel pressure relief valve. These guys seem to shoot towards the more uninformed crowd, but bad information is dangerous in its own right

@yaroku102 2 года назад

@@BlondeWick that and possibly grenading injectots by deleting the relief valve, if you are hard on the engine.

@JesunAtayde-lv9cz 5 месяцев назад

Yes pressure relief as very deferint

@motoguru6023 Год назад

I have low fuel rail pressure code when towing. When I come to a red light. It will be in limp mode when I try to get going again. I have a lb7. Help please.

@Duramaxtuner Год назад

Give us a call, 815-568-7920. Reference any codes. We can help assist in the right direction, but it would be best if we could diagnose the truck ourselves.

@andrewdhunter15 7 лет назад

Is there a number I can call to speak to a technician? I've got an issue that just started tonight, I had efilive installed Friday night on my 2004.5 Chevy LLY, I got to 60 mph at about %60 throttle and then my truck shut off completely. I pulled over, primed it several times and will not crank. Filled the tank up primed primed primed again and nothing. Any ideas?

@Duramaxtuner 7 лет назад

Andrew - by all means - click this link and we'll get back to you ASAP: goo.gl/SBPty9

@andrewdhunter15 7 лет назад

Awesome thanks

@Duramaxtuner 7 лет назад

Let us know if you need anything else - 815-568-7920

@nickc2708 7 лет назад

I've got symptoms of plug failing but no codes. Truck is stock. Is it worth changing out anyways?

@Duramaxtuner 7 лет назад

Yes.

@nickc2708 7 лет назад

Right on. Thanks. I really like how on your videos you guys come across like, here's the do's and don't and that's that. You don't over sell your products. That's a huge mistake with the other companies out there. I'll be ordering product come spring. It's just too dam cold here in mn. Thanks.

@Duramaxtuner 7 лет назад

Right on! Warm weather is coming and we cannot wait. We really appreciate your comment about our videos. That's been the plan all along, giving you useful, credible, and authentic information - no BS. If you ever want to talk directly with us, please give us a call 815-568-7920. We're ready to help!

@paul0421 5 лет назад

Does the LML have the same or similar problem?

@Duramaxtuner 5 лет назад

Actually, the LML has an electronically controlled valve.

@paul0421 5 лет назад

@@Duramaxtuner Oh great. So I'm sure you can control/fix that issue with tuning.

@codymarshall5753 Год назад

Whats Recommended for 10m stoker pump 90 hp injectors 06 5.9 ?

@Duramaxtuner Год назад

Tuning.

@codymarshall5753 Год назад

I have tuning. I'm just trying to find the best one, too, replace my rail plug. Is 2200 bar good or 2000?

@rootedflunky1 6 лет назад

I'm having fuel pressure loss when my lmm sits and I have 2 prime it. Could this valve be the problem? I'm getting no codes

@anthonygutierrez1038 6 лет назад

rootedflunky1 no that is caused by your fuel filter housing. You just need to rebuild it. It’s like 20 bucks comes with new spring seal and brass fitting.

@sergioflex5145 5 лет назад

rootedflunky1 same thing happen to me about 2 months ago. I rebuild the fuel housing out on my drive way and it was missing one of the o-rings in there. Didn't even have to take it completely off my lmm let it hang and put back with new seals and bam! Running like a champ.

@rootedflunky1 5 лет назад

Sergio Flex5 ...... I replaced the water separator sensor and that fixed my problem... Thankfully I didn't have 2 rebuild the housing.

@stevengoodwin4237 4 года назад

I had same problem a couple of years ago, leaking around primer, also wires were broken for the heater on the top of the filter housing. Could not repair wires , ordered a new housing from dealership and problem solved.

@candaceself5469 2 года назад

@@anthonygutierrez1038 n

@bradysolaem2467 5 лет назад

Cause of no start? Took cap off and leaking diesel

@claytongilbert4482 7 лет назад

lbz recommended torque specs?

@jx906 6 лет назад

This DOES NOT apply to an LB7. There is no fuel pressure relief valve on an LB7. For the Duramax trucks that have the relief valve, I saw 74 ft. lbs. somewhere for this little guy! Just crank it on there like the good men at Calibrated Performance said to.

@oxoraizenoxo7420 6 лет назад

74 is correct

@saltysteel3996 4 года назад

@@jx906 He said LBZ, not LB7. But thanks for the torque specs info.

@texastreeman 7 лет назад

My valve will NOT come out !! I bought the replacement plug from you guys. I may have to take off my fuel rail. This thing is on like the world depended on it. Any advise ? I have NOT stripped the valve in there YET. I can't get to it at a great angle to get the job done.

@Duramaxtuner 7 лет назад

Hey Texastreeman - at 3:08 in the video Nick talks about linking wrenches to give you a little more power to loosen the plug - don't know if you've considered that yet. If you're still in need - click on this form and we'll contact you when we re-open Monday AM: info.calibratedpower.com/we-can-answer-that

@oxoraizenoxo7420 6 лет назад

To avoid it slipping off stick a 3/8 extension between back of wrench and mounting bracket then get nasty with it

@fueledfilmz1730 4 года назад

can i replace without any mods ?

@Duramaxtuner 4 года назад

yes you can.

@jarhead13710352 4 года назад

So what is the torque spec for the relief valve plug?

@elviayoung2233 3 года назад

74ft lbs

@hutchesonchris42 2 года назад

Torque to spec. What is torque?

@bobjohnson8628 5 лет назад

does this apply to the lb7 eng.?

@Duramaxtuner 5 лет назад

No.

@bigangrybear9310 4 года назад

No lb7???

@danielcastillo830 3 года назад

“p0047 Turbo/super charger boost control solenoid circuit low “ then “p0090 fuel pressure regulator 1 control circuit “ those my codes

@marcosbaldovinos 5 лет назад

Can we use this on the lml motor

@MrJesseevan 4 года назад

DMAXMB Mb that’s what I’m asking myself 😂 16 lml here

@jorge242 2 года назад

Can a bad relief valve cause me to get high fuel pressure?

@Duramaxtuner 2 года назад

No, generally that would be a regulator issue.

@StyleGT 9 лет назад

what are the torq specs....

@slowpoke96Z28 4 года назад

StyleGT did you ever get an answer?

@Liamd330 6 лет назад

Questions guys! I'm getting the code "fuel pressure release valve activated" but it only comes on when I'm sitting not while driving at all. And I'm getting none of them symtems you mentioned so have no idea what the problem is my car is 1.4 tfsi stage 1 remap

@Duramaxtuner 6 лет назад

Give us a call tomorrow - we're not exactly experts with this engine - although we have one sales tech who drives, flips VW TDI's. 815-568-7920