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How To Save Thousands Owning An LML Duramax
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- Опубліковано 17 сер 2024
- Installing an Exergy Fuel metering valve into a 2015 chevy 2500hd duramax diesel LML. This valve will keep the metal in the low side fuel system only. If the cp4 fails only the injection pump , fuel filter , low side fuel lines flushed and tank need to be cleaned.
WARNING: DO NOT BUY ON AMAZON , NO EXERGY BRAND SOLD ON AMAZON. BUY FROM REPUTABLE BUSINESS. ON AMAZON LOOK AT BRAND IN DESCRIPTION SHOULD BE EXERGY IF NOT ITS NOT. LINK IS LOWEST PRICE EXERGY I COULD FIND UPDATED 9/27/23
Exergy LML Fuel Metering Valve :duramaxtuner.c...
That valve saved me big time! While I was having an Air Dog fuel filter system installed I decided to have this valve installed and when the shop was test driving my truck the CP4 went out!
Just wanted to say thanks for the Help ! Just installed my Exergy onto my 15 LML. Felt like i was doing heart sugery with trying not to have even a spec of dirt into the Pump during instal. All went well there was a few very small pieces of metal on my old screen but my truck has 183k and it runs great so far. I have been running the Hot shot fuel lubracisity additive.
The torque spec for the FCA mounting screws is 60in/lbs. Thank you for the video. I will share it with people who call in and ask how to install one. I work for Exergy Performance. 😊
THANK YOU for this video!!!!! I installed my exergy on my 15 lml I was not confident at all until a watched your vid. I kept my cool and also did tstats while I was in there. the hardest part for me was getting belt back on lol. thanks again👍👍👍👍
I was gonna do a whole CP3 conversion on my 13, but I think I'll do this instead. Thanks for the excellent video.
Early bird gets the worm! This channel deserves more views and subscribers surely. You take the time to post valuable, critical information before the wrenches start flying for the day. Lots of good stuff on your channel. This should help the bowtie guys if you could get more views.
Always a thumbs up and a comment for the algorithm from me sir. Hope it helps.
Just about to go make that cake myself. Time to get the wrenches flyin!
Have a great day brudda!
I’m a Ford tech and I’m doing a fuel system on this engine holy shit the egr assembly is a pain in the ass after working on 6.7’s and 6.0s and 6.4s and 7.3’s this engine is a pain in the ass to work on
Tottaly agree , the Duramax’s are definitely the worst to work on compared to ram and ford. I believe the cab is supposed to be lifted to remove the egr assembly (doesn’t need to be). Even to do the fuel system you’re supposed to pull the transmission and turbo.
@@drewsshoplife but bro I can get the engine out of a ford 6.7 by titling the cab on the single cab 550’s and it still isn’t that much of pain in the ass as that egr why did they make it wrap around so far and hide those heat shield and the 3 bolts on the back side that’s a pain in the ass but I know it’s a guy who works on those engines that it’s easy to him just like he’d be lost if he worked on a ford 6.7 for the first time but I will still say that engine is a pain in the ass
Is that a fuel pressure regulator?
Awesome! Thanks for the quick vid, hope mine goes this well Lol 🍻
Thank you for you information thank you so much
How much would this cost roughly to have someone else install it? Also ive read a lot of people putting these on and getting rail issues and pumps going out
Where are you located. I can't find any shops near me who will do the install
Im having issues to when truck is cold it cranks on but once it warms up and I shut the truck off it’ll just crank and not turn on what do you think it can be
Thannk you for your videos man. Very helpful. Recently im havin issues on my 2012 lml with roughly 240k miles on it. The truck will just kinda hiccup and stop running for a second then come back. More recently within the last few days its been hiccuping as i slow down at like a stop sign and then go into limp mode. And finally nownit just stays in limo mode. It always throws the same 2 codes p0091 p0193. Do you think is an indicator of failing cp4 pump or is it common for fuel regulator to fail? Any advice you have id he grateful. Thanks
Sounds like you have a wiring issue somewhere. The p0091 is for the fuel pressure regulator 1 circuit which is the one in the pump called the volume control valve. The p0193 is for the fuel rail pressure sensor located on the back of the driver side fuel rail near the firewall. I would first start with a good visual inspection of the wiring and if nothing is found wiggle the wiring while its running to see if it acts up to locate the location of the problem.
@@drewsshoplifeThanks for your speedy response. I'll definitely start with that. If there is no wiring issue what would be your next course of action?
I installed this on a perfectly running cp4 lml 2011, cannot getvtruck to start now. Scanner is showing low rail pressure of 100psi when cranking. Wife is pissed ! What gives ?
Possibly got a bad valve? It happens sometimes. Where did you get it from?
Bought online, I put my oem one back in and still won’t start now
I just bought a LML and I'm stressed out worrying about the cp4.... Is this the best protection?
Bro i have had my LML since 2013 and mine is heavily Modded, people fear monger the CP4, them grenading isnt that common, get you a good lift pump and research Hotshot secret they have an LX4 extreme lubricity treatment designed for cp4 and can be used with their everyday diesel treatment. the low quality US fuel is the problem not the CP4
I believe its the poor quality fuel in the us aswell. I always recommend running some sort of lubricant addictive to help these pumps and changing the fuel filter often with a factory part. Out of the thousands of lmls Ive worked on, Ive seen a failed cp4 probably around 10 times. Its not common but when it does happen it is very expensive to repair.
@@JJP937 that makes me feel a little better 😆
@@drewsshoplife I have been using the every day treatment but I will find the Lx4 and a lift pump
If you already have a Exergy system saver metering valve installed with a lift pump like a AirDog or fass on a lml and have a cp4 failure. Would your lift pump and filters be contaminated also? And if so what would be the cleaning procedure for the lift pump besides new filters? Thanks
What state are you in? Good mechanics can be hard to come by. I'd love to have you work on my truck, if you're nearby.
I'm in southern california.
@@drewsshoplife
Great work I’m in SoCal too. Need this done asap
does this actually work where is the testing I'm not seeing any. also does it restrict flow?
I understand your point, I’ve had two of these valves save the high side of the fuel system. When we do full system replacement on the lml and the Powerstroke 6.7 if the customer doesn’t opt for the upgraded cp3 for the lml or dcr for the Powerstroke we install these. I am curious on the restriction of these valves , but I have yet to have any issues with them after installing probably 50 of them.
I keep seeing folks cp4 a blowing up making me real nervous since I’m at 146k miles, I wanna check mine before I replace to know if I’m gonna be spending $250 or like $4000
Safest bet is to install the exergy valve, you don’t want to have it fail and cost 10-12k to replace the fuel system with another cp4.
@@drewsshoplife I was gonna do the cp3 swap but I have heard it’s not 100% this will save the fuel system
@@Ah01e72 The cp3 is a very reliable injection pump, with a cp3 installed and I would suggest a dad’s or air dog lift pump and the fuel system should be bulletproof on the LML. For the meantime if the cp4 is still functional I would suggest the exergy valve until it fails then the decision can be made.
@@drewsshoplife I meant to say I heard the valve isn’t 100%, but I have an airdog and us hot shots every fuel up I just gotta check that fpr one day and go from there
is this comparable with the CP3 pump that I installed on my 2014 Silverado LML ?
Not at all , cp3 is the way to go. This just prevents the metal spreading to the injectors and rails when the cp4 fails. What I suggest is install this first and when the pump fails do the cp3 conversion. The valve alone will save over 5k at a shop not replacing the injectors and rails.
Thank. You I didn’t know wether there was a 20 micron pressure control valve for the new CP3 or wether it came with one when it was installed on my pickup I failed to ask the shop that did it
Did you see any problems starting the truck when it got to warm, but would start fine when cooled down? Could this be CP4 related??
I have experienced that issue with a couple ford 6.7’s (similar fuel system as the lml) and a couple lml’s aswell. Usually that’s a sign of a bad injector (injector is leaking the high pressure fuel into the return) or the fuel pressure regulator is acting up (on the drivers side fuel rail). I have yet to see any cp4 issues besides them blowing up. And from what I’ve been told it usually happens while driving and they slowly decrease power and then shut down. Start with checking the fuel rail pressure with a scan tool. If it’s close to desired I would check the return rate from the injectors next.
Thank you I appreciate your opinion!
@drewsshoplife just installed a airdog lift pump, truck needed one no doubt I currently have 247,000 miles on the truck I have no problems with it at all other than a little startup problem when it is cold fires right up, when I drive it and get it up to temp it will not start until it cools down to at least 170 degrees on the temp gauge, looked at fuel rail pressure injector timing all that good stuff everything looked good to my knowledge. The truck before the lift pump was added was loosing prime due to not having a lift pump and I bought a fuel filter housing cause they sometimes develop cracks in the housing causing the truck to suck air and not start but now the lift pump is added it has prime in the filter. Running out of ideas on what the situation could be???
@@jimmystrough6775 Sounds like when the its loosing fuel pressure when the engine is hot starting. You should verify that with a scan tool and verifying the actual vs desired fuel rail pressure. If you are not able to build enough pressure at a hot start you could have a or multiple bypassing injectors (bypassing to return) or an issue with the fuel pressure regulator.
Any videos on fuel temperature censor on an lml?
Nothing on that, don’t see any issues with that besides wiring issues. That sensor is located at the back of the cp4 pump
Is there a way of telling if I had a cp4 failure or if it may just be that sensor. ? I was driving with check engine light on truck went into limp mode and then it shut off
Unfortunately that’s usually what happens when the cp4 fails. I have yet to see the volume control valve fail by itself yet. One of the easier ways to tell is remove the fuel filter and see if there is shiny metal in it. If so the pump has likely failed. Before pulling the control valve I would check the high pressure on a scanner to see if it’s low. If so pull the volume control valve and you’ll likely find metal.
I took fuel filter off an no metal shaving came out when I was dumping it out
i have a lml and im having issues. and i would like to get this installed as well.
You really should, hopefully your issues aren't your injection pump internally failing (putting metal in fuel system)
Is this the best protection from the cp4?
@@kyle-409 This is a great start, I would suggest doing a nice filtered lift pump like fass or air dog and run a fuel additive. Whenever I replace the fuel systems on these I install a fass lift pump, helps keep pressurized clean fuel at the injection pump. Ideally long term it would be best to install a cp3.
@@drewsshoplife I just got the truck and I know pretty much nothing about diesel engines. I want to do so much but as you know it's expensive. Really just need some peace of mind while saving up for some bigger and better things. Appreciate you getting back to me
@@kyle-409 Maintenance is key on these trucks , use factory filters. The energy valve would be the best place to start. The lml’s seem to be very reliable besides the cp4 and emission systems. For the least problems with the emission system try not to idle too much and drive short trips. Try to take it out on the highway often.
How much would something like that cost?
To Install the exergy metering valve we usually charge 2hrs of labor and the valve would be about $600 parts and labor
We're are located what city thank u
Were is your sho located
Part number ?
Gwm steed 5
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