2013 Chevy Duramax 6.6L LML crank no start (air leak)

duramax LML air leak on the fuel system.. will cause crank no start.. long cranks.. cold and hot no starts. So hopefully this will help you guys out..

[@Webedunn]

Yes, you can push the prime pump and find the leak in the water separator. At least I found mine that way. My truck would just quit on the highway and that’s all it was. It wasn’t screwed in all the way. But hey, brother, you do what you do. You’re helping us out! Screw the haters bro!

[@travisswiggart7506]

Pry the best fella that posts videos I've watched yet this guy is easier to understand things better for me at least I must say I give the man props and the Fact he go an do it in Spanish as well good shit this guy's simply spreading knowledge to help without anything in return I say this because a lot of other videos dudes ain't really so much asking for money in return but it's almost like they ask for the ego to get bigger cuz they like are doing it only to seems to be like show how smart they are this guy actually wants people to be helped out just out of the good and non hater type of way good stuff good man

[@ericwilson2913]

Thanks bro you made it simple and easy to diagnose

[@ScottPBrown]

Carlos.. thanks brother. Appreciate your good spirit.

[@12oldman]

Appreciate plain talk. Keep it up.

[@chapin9312]

Saludos camarada Carlos. Me has dado unas lecciones de Sensei. Prometo ir a saludarte cuando viaje a Texas. Mereces mis respetos. Gracias Pibe

[@samgreen6144]

It was a big help man I appreciate it

[@dougmiller7643]

Thanks so much, mine is in the shop for the exact problem.

[@jasonfreeman8010]

Awesome! Fixed my problem! Def got a new subscriber 👍👊

[@tomasmiranda2235]

Thanks man for your help.

[@stronglifeframinginc]

Thanks for the video. I will try that. 👍👍👍

[@rongarcia3222]

Thank you .haters will always be haters. They are jailus of your experience thank you again Ron garcia.

[@BackyardDieselz]

Cool thanks bro .

[@speroscott]

Thank you for this. Been days researching and trying to diag a crank no start. This will help me find it.

[@BackyardDieselz]

Hope you find it bro

[@josepena1046]

Thanks so much! Gracias amigo chingon! Sube mas videos!!!

[@ericrescue1]

thanks for the tips bro

[@jarrodblouin]

Good vid, shoulda seen it four days ago

[@johngatliff7648]

Thank you, much for your information.

[@iispjhanna]

thanks for the video, mucho gracias.

[@rg3tv984]

Thanks for the video, I replaced the fuel pump housing on a LLY. It worked for a day and it would slowly lose power , now it won’t start, i primed it and still no start , , I’m going to check it all over again, I will sub to you’re channel u explain everything great 👍🏼,.

[@BackyardDieselz]

Awesome bro.. hope you figured it out..

[@stronglifeframinginc]

Great video

[@jcmcewen81]

Hey good video man, keep it up, THE HELL WITH ALL THE HATERS AND ANYONE WHO HAS SOME SMART ASS COMMENT...Thanks for the good info ,saved me a ton of time finding my crank no start problem.

[@Alonzoacosta-gc5pb]

Gracias amigo por tu ayuda 🙏

[@georgehofgren6123]

Helpful, Thank you~

[@isaacshacky17]

Appreciate the video very helpful. Where are yall located ??

[@freewaterscheduling1343]

Thanks dude

[@ericanderson8556]

Thanks!

[@fernandomoran5979]

Gracias!!

[@DormantIdeasNIQ]

Thank you. Muchas gracias, senior. Esta una gracia para los plebeyos. How do you get to all of this on an LGH(detuned lml) in an Express(cutaway) body(like a van) ... there is hardly any access!?

[@gracemcleod8274]

thank you

[@kylepaquette5848]

Excellent 🎉

[@michaelbolton8176]

Thanks

[@leahram84]

Es mi primers diesel que nesecito para el tunap

[@AngelPerez-jz6if]

Chingon grasias

[@chrisclayton3982]

Hadn’t seen a vid on what mine is doing, and you are the only plain talking mechanic. My fuel gauge would read empty with a half tank of fuel sometimes, then driving down the road the change fuel filter light came on, then it reduced power. I pulled over and engine died and want start back. Any ideas on where to start? Just change fuel filter, so not sure on that yet.

[@arturocruz1035]

Gracias gracias Carlos y Juan Mi mamalona trae ese problema

[@BackyardDieselz]

Si le encontró primo

[@DormantIdeasNIQ]

que es mamalona? verga? entonces broma? no la ha encontrado en el dictionario. ...and I am perturbed at the way the verb traer is used, is this informal Spanish?

[@stlaww77]

Excellent Video Bro....my Duramax wasn’t isn’t Starting and I’m Pretty sure this is the Issue

[@BackyardDieselz]

Figure it out

[@dfreddy3141]

So when I first deleted my dpf and Egr the you could hear the turbo when you started it. Now the exhaust sounds like a gas burner and the turbo takes a few seconds to spool up. No codes.no boost leaks.

[@charlesdonaldson962]

I didn't need it but I appreciate the Spanish for those that do. Like you said f..k them haters!

[@atlantaprimemotors]

Carlos I was wondering if you can help me with a 2015 GMC 2500HD Duramax. Truck cranks but not start only when its warm or being driven. Cold Start it starts right up. Any suggestions? Thank you!

[@bradn1559]

Going through this shit right now after having a LOT of work done to my 15 lml. Freakin sucks

[@brettconv83]

I’m working on a 2013 Express 3500 ambulance with the 6.6 LML and this one actually has a lift pump on the frame rail, they call it the fuel condition module but it doesn’t have a hand prime like the other ones. We have complaint of fuel leak and extended crank but once it’s running it fires right back up. How can I pressurize fuel system to look for leak?

[@tuckerizer666]

Good video for information. 👍

[@ubertuber5283]

Buena informacion carnal donde esta tu shop tengo problemas con una 2500 hd 6.6 como te puedo contactar paraun tip crank no start

[@tobyyorn3857]

I have a crank no start has manly a p0335 crank sensor code they change crank sensor has no readying to crank sensor they did conuity test passed , checked the passcode 2 system still can’t find when cranking the rail fuel pressure got to 106 thousand something on rail pressure so fuel seems to be good ???

[@morisventura674]

Carlos tengo una chevy express duramax, estas tienen lift pump, pero it cranks but it doesn't start. Any suggestions? Thanks.

[@MrDannybeltran94]

I have an 05 lly crank but no start I changed the fuel filter header and filter and still nothing, I’m loosing prime, maybe this could be the issue? Thanks

[@jesusgardea7496]

Compa tengo una 15 duramax no enciende solo con started fluid me marca fuel rail sensor ya los cambie ya cambie glowplugs y el filter housing!

[@edmundorodriguez9479]

I have a 2016 lml and its leaking air from the rear passenger injector what should i do

[@jasondunivan7164]

I have a 2011 GMC Duramax just put a brand new long block in it I’m having the same problem with air in my system I have put a new vacuum pump a dealer fuel filter I have pressurized the whole system from the quick connect replaced the sending unit in the tank have you ever had problems with the leaking at the quick connect

[@BackyardDieselz]

I have found leaks all over the place place.. have you tried to isolate where the leak is coming from.. in sections.. I will start at the fuel filter housing... Do you have anything to draw vacuum and vacuum gauge... If not...you can also try.. putting air in the system.. no more than 10psi...and if you find a leak.. fix it...or install a fass pump...why you replace the engine..what was wrong..you don't want to install a fass pump if your having hp issues.. you can also fill up a bucket with diesel and tie-in before or after the fuel filter.. this will eliminate the tank.. then you know you have a problem before or after the fuel filter...

[@morisventura674]

Mi pregunta como haces cuando el vehiculo tiene una lift pump electrica, xq mi van chevy express duramax dicen que tiene una lift pump electrica. No tiene ese primer como haces para encontrar un air leak, y si alguien sabe a donde tienen estas vanes las lift pumps, gracias.

[@youquietinpublic]

Would this cause truck to randomly shut off ?

[@kernailliam]

Cheap pump and 5 gallon can pressurize the system and you can see the leaks, great video though

[@BackyardDieselz]

That works great on actuall visuall leaks... and leak you find putting pressure on the system are like day and night.. fuel everywhere....you pressurize the system over 15psi.. and you can seal the original leak..(once is go to vacuum draw it will start leaking again) but i guess I should have explained that in the video... But i get exactly what your saying..

[@wesleywood2282]

Helpppppppppp 06 gmc Savana 3500… Crank/No start.. I found the lift pump on the rail, that when it comes on, you can hear a lot of air or gurgling in the fuel tank! The truck might run for about 10-15 seconds, then stall….

[@mikehilton6988]

Should it start with Ether

[@josepaco7256]

Hey bud I have a LML was driving fine turn it off and would not start. Low fuel rail pressure code and map sensor code. Started up with starting fluid and runs all day no misfire but won’t start up unless you use starting fluid. Pump was replace no shavings fuel filter replace, plunger replace and does the same.

[@BackyardDieselz]

Sounds like an air leak.. just like I'm explaining here.. and also might have an injector stuck open.. not letting you build high pressure...

[@josepaco7256]

@@BackyardDieselz so my obdll is saying at crank 1300 psi when I start it with fluid 5000 psi. Giving me code for pressure relief valve high voltage map and maf.

[@josepaco7256]

@@BackyardDieselz thanks for your time again man we appreciate it

[@royanguiano2610]

I supposed that you can’t fill the system with smoke because the air can vaporize the diesel . But man you know your stuff, can you please make a video for doing a return flow test an how to set it up. I want to learn how to do an injector an pump flow return test to see if there return excessive amounts. Also nobody shows how to set up a vacuum test to see the vacuum on the Duramax suction side of its subsystem. Can you please make those videos an the people that are talking mess , how ungrateful of them!! I’m thankful for everything I can learn as I’m studying everything from diesel I bought a book after finding out what book the college students use to learn myself exactly what there learning but way more in-depth cause they can learn so much but 10’s of thousands of details are in the book that they don’t learn. You can’t master diesel with all the system an variations they have with just minimum classroom time. It’s not enough . So thank you for everything your teaching an yes I’ve subscribed. I have near 200 videos that I’ve made a library dedicated to diesels for my own studying when I’m not reading. But videos help give visual understanding an clarity. So please make those video an maybe give a shot out to a fan like me lol . God bless you man.

[@stlaww77]

Niceeee.....where u located Bro?

[@BackyardDieselz]

In Garland TX bro. You find your issue. Hopefully it helps you out.

[@martinanastacio8746]

Oye Carlos mi mamalona 2005 .2500 estarea Pero no arranca por donde puedo empezar a moverle

[@jmaxwell9815]

Where you located ?

[@tommybrown6869]

I have a 2013 Duramax 6 6, left the house the other day kind of got on it hard so went about a mile-and-a-half ,come to a stop sign it died just like it ran out of fuel have not been able to get it to start since change fuel filter primed it still not starting any ideas.

[@BackyardDieselz]

Has to be air in the line or fuel system shot..

[@Bailgear]

I have a 04.5 duramax. Have you ever have a fcim start to leak air? I can’t find the fuel leak think it’s the fcim?

[@sheltoe93]

I just got the same truck similar issue , tonight I just found a leak at the fcim, gonna try and replace the gaskets and continue to check for other leaks tomorrow

[@jodyhammond6081]

can you manually check the fuel pressure on the fuel rail 09 Duramax what should the start pressure be on cranking, I was driving the unit and it was like somebody just turned off the key. I have no codes and the fuel primer pump gets hard when you pump it.

[@BackyardDieselz]

You check low side... Never high side.. computer only

[@jodyhammond6081]

What should it be on the low side

[@alfredocampos5877]

Me puedes ayudar por favor tengo una 2013 chevy 3500 Diesel Mi problema es en el encendido prende con starting fluid Eso lo necesito para prender el resto prende normal

[@BackyardDieselz]

Aire o injectors... El starting fluid es muy malo para diesel..

[@timothyandrewgalable]

Thank you I'm pretty sure mine is leaking under the EGR been driving me crazy trying to figure out what's happening I've replace the fpr on the rail and the vacuum sensor now I will search these hoses the one you pointed out looks like mine it cracked fingers crossed it'll fix it I'll let you know got a cash app by chance?

[@MrDannybeltran94]

What year is your truck buddy? I have an 05 and it’s crank but no start I changed the fuel filter header and filter and nothing.

[@timothyandrewgalable]

@@MrDannybeltran94 mines a 2012

[@timothyandrewgalable]

Didn't fix my hard start when hott but that line was pretty rough mine will start in the morning it is an extended crank but it won't start after the block is warm truck won't start without starting fluid runs fine I have a airdog lift pump and fuel filter delete dic shows change fuel filter when starting no clue what's going on been driving 3+years and thousands of miles this way even pulling trailers no problem low rail pressure engine light comes and goes

[@nehemiasaldana2554]

Hey bro. I’m having the same problem I replaced the cp4 on a 2015 Sierra 2500HD LML same engine you have on the video this truck starts just with starting fluid, you can drive it all day long and runs and drives perfect, but when you shut it off it won’t start back up.

[@BackyardDieselz]

Why u replace the cp4 . What was the original problem of the truck.. do you have a way to check high pressure.. are you getting any air out of relief nut on the filter when you turn it off.. if your using staring fluid...most likely your fuel injectors are shot.. depending on how long you been using ether.. if no air.. check ur fuel return lines.. how much fuel is coming out during cranking..

[@nehemiasaldana2554]

I replaced the cp4 because the truck shut off on the road, So first thing I did was to check the fuel pressure regulator I found metal shaving, I replaced the cp4 clean the lines, clean the fuel tank, installed new OEM fuel filter, and now Im stuck with this problem it starts with long crank just in the morning you can do it twice after that It won’t start back up. Do you think I have bad injectors?

[@BackyardDieselz]

@@nehemiasaldana2554 i'm positive You do.. You should have replaced the entire fuel system at once.. if you leave any shaving what so ever.. you will be doing the exact same thing over again.... There's no way to clean everything perfect.. unless you disassemble every single little component..

[@nehemiasaldana2554]

That’s what I thought that the injectors were bad but I wasn’t sure because the the truck runs good. Thank you so much for your help I really appreciated.

[@BackyardDieselz]

@@nehemiasaldana2554 yeah bro when you have contamination... Might as well replace everything.. you will spend a little more but saves you the headache from doing it again.. i tried cleaning the fuel system and there's always a lil shaving left that can scratch the hp pump again over time.. and in time you'll have an other failure down the road.. I'm willing to bet your new pump is already scratch up.. you have to take time flushing out the fuel system.. the shaving will go threw the fuel filter..

[@xXTECHxKNIGHTXx]

My neighbor has a 08 2500 6.6 and it wouldn't start for him, I was checking it out and looking over the computer with my scan tool, and I was cranking on it and happened to pump the gas pedal and it fired right up. Fuel pressure looked good didn't see any leaks when I was quickly looking over it last night, but just seemed odd that pumping the pedal got it to start? I shut the truck off waited a minute and tried starting it again and it fired right up every time without touching the pedal. Any ideas as to what might be going on?

[@BackyardDieselz]

The pedal has nothing to do with it.... Diesel a lil different than gas engines... But perhaps the intake throttle was stuck closed

[@xXTECHxKNIGHTXx]

@@BackyardDieselz Good point. I did more digging into it this past weekend and just could NOT get it to repeat the symptoms that he was experiencing, wiggled wiring, took it for a test drive, nothing lol. He also stated that what can happen is he will start it, drive about 20 30 feet and it'll shut off too, kinda thinking maybe fuel related? But pressures seemed to checked out, I'm no expert but idle its about 4000 5000psi and under full throttle I'm seeing 24000 PSI and couldn't find any leaks. With how sporadic these symptoms are I'm almost willing to bet its an electrical issue. If yall were in ATX I'd send him over to yall!

[@BackyardDieselz]

Ya sounds electric.. but pressure is right on.. but the engine harness on all duramax are shit.. it's a common problem..

[@chevyxrz]

@@BackyardDieselz bro I was reading the comments, and I went to go turn on my truck in the morning to go to work and it turned on but after a little bit it shut off. I went to start it again and it would just crank like if it wasn't getting any fuel could it be something electric, or could it be an as air leak in the fuel system this shit has never happened to me before I also changed the fuel filter.

[@BackyardDieselz]

Can be anything... No codes and check for live data

[@Christian-fx9ke]

Tengo una lly tiene el mismo problema solo con star fluido prende pero si la dejo mucho tiempo prendida

[@Christian-fx9ke]

Ya no tiene power y tira mucho humo negro

[@BackyardDieselz]

Si más seguro aire.. y el humo una linea flota del turbo

[@ramirorodriguez3972]

2011 Chevy duramax won’t start hot can you help me please

[@BackyardDieselz]

Only when hot.. how about cold.

[@terryutterjr9163]

Ok.. I've got a 2011 2500 HD duramax.. have power to everything but when I try to crank it kills power and won't start.. and it acts up when I use the key fob to unlock acting like it's got no power.. all dash lights come on until I try to crank then I just get glow light and sometimes a random other light.. any ideas? Can't work without my truck, need help!!

[@BackyardDieselz]

Make sure I mean really sure all your terminals are clean and connect... And make sure you got over 12 volts on each connection at batteries.. and check your grounds as well.. even though the terminal loot good at a glance. I seen alot of new terminals look good..

[@terryutterjr9163]

@@BackyardDieselz ok I cleaned all connections I could find and get my fingers to.. but now I have no power at all batteries are on charger now as they only read 4 on the meter.. even with jumper cables hooked up there's no power any where.. HELP ME PLEASE..

[@BackyardDieselz]

@@terryutterjr9163 uplug batteries asap

[@BackyardDieselz]

Something is ground out.. a main cable.. check hot cables to see if any are gounded..

[@terryutterjr9163]

@@BackyardDieselz had them unhooked while charging.. andnafter a full charge cycle their only reading 10.5 and the other is at 9..

[@davidmichniak8210]

2007.5 LMM cranks but no start. I pump primer and it wants to start but doesn't. Has a P0090 code for FPR would that be my issues?

[@BackyardDieselz]

Can you see live data... Could and couldn't.. do you have air in the lines.. coming out your bleeder on the filter housing...if not...the fuel pressure regulator on the high pressure pump...

[@davidmichniak8210]

Replaced FPR on pump no more code but still same result. Cranks and wants to start but looses prime at fuel bowl. Live data on my snap on solus says desired fuel rail pressure 41.62 (MPa). When I Crank it is goes to 60.00(MPa). I appreciate all your help and time if you can help I would be grateful thanks

[@BackyardDieselz]

It's not fuel related... Cam you read cam and crank rpms... Any codes after long crank.. and what was the original problem...what happened to the truck that stop working..m

[@davidmichniak8210]

@@BackyardDieselz went to start it one day and wouldn't. It cranks and wants to start but doesn't quit get there. I'll check for crank an cam an see what happens

[@davidmichniak8210]

Got the scanner to pick up crank an cam signal. Still no start

[@josevargasjr951]

Hey boss I just watched your video, I got a 06 gmc Sierra classic 3500 with the 6.6 , I changed the fuel prime housing n still got same problem i can prime it 80 times and won't lift fuel, started till it cranks run only at 30 mph check the prime housing and it'll be all the way sucked down, I don't know what else to do ,I dropped the thank cleaned, can u please help?

[@BackyardDieselz]

So your not pulling fuel...you can try bypassing the tank... You can get a 5 gallon bucket with diesel fuel and connect it straight to the fuel filter.. so you mostly have a problem from the filter housing back to fuel tank..

[@edgarcastaneda3822]

Oiga yo tengo una 2005 duramax y el problema que trai es que prende chingon y todo pero despues unas horas prendida la apago y ya no prende como si no tubiera diesel si da marcha chingon pero nomas no prende y ya nomas me espero al dia siguiente y prende chingon otra vez y corre bien al 100 y no le marca ningun check engine ni nada osea trabaja bien pero pues nomas la apago y vuelve al problema oiga le pago la consulta si me orienta por favor nomas digame donde llamrlo

[@BackyardDieselz]

9728963437.. estoy para echar la mano no cobro consulta..

[@morisventura674]

A donde estas localizado carlos.

[@douglasramos5729]

hey tengo un problema con una de esas el problema es cuando esta fria ella enciende bien y todo pero cuando calienta la apago y la trato de encender ya no prende algún consejo

[@timothyandrewgalable]

Same here

[@victorsidingguy4371]

Un relay canbialo

[@franciscohunter4422]

Nice 👍 job brother congratulations. Hey I have a problem with a 13 Silverado 6.6 liter 3500 I replaced the fuel injection pump and now don’t crank at all and the scanner give me all this codes P2295. P0047. P0650. P20CB. P208A. P0381. P0480. I already check all the connections and no star no crank can you help me with that please 🙏I will be very appreciate with your help

[@BackyardDieselz]

Sounds like you need to clear and start fresh...those are all codes that you had to disconnect while working on the truck...you probably cycle the key when everything was disconnected...or didn't remove the batterys.. what's are your fuel pressure reading

[@vatoloco1776]

Hey bro I have a 2005 duramax and I changed all the injectors and ran great for a few days but I came home after work and I turned off the engine and did not want to start and still don't. It blows my mind I don't get it . And fuck the hater shit talkers . And when its was running it sounded like it had a exhaust leak . 🤔 can you suggest something señor. gracias

[@otmandanielgonzalezbrito6047]

Hola Amigo , un número de teléfono para hacerte una consulta gracias 👍

[@BackyardDieselz]

Perdón primo no miré tu mensaje hasta orita.. pero busqué en Google maps.. Backyard Dieselz.. Marque a es número..

[@Webedunn]

No disrespect but when you have motor problems, find your Latino brothers.😂

[@Alberthgas]

William butcher