What I Found After Pulling The Duramax Head! *Heads Up Diesel Owners*

[@TruckMaster]

Check out the website for your truck part needs! 👉 truckmasterdiesel.com

[@ethanvasold1935]

I have a 2006 lbz I just put s&s 30% in I’m having a tick it’s just dumping black smoke and loss of power I’m stumped. Can you pm me on any idea of what you may think It may be I don’t have a lot of shops near me in Saginaw Michigan that aren’t over priced or take months to get to the work.

[@jacobparks9952]

​@ethanvasold1935 have you checked the turbo and do you have any fault codes?

[@semmble2k7]

His comments about the high combustion temps are right, though can say for sure from dealer training that tune is 10000% spraying fuel at the wrong time based on the flower pattern on the rest of the pistons. Should not be out of the bowl like that.

[@mikecude4167]

Did you notice how they say nothing about the tune and injector timing? Tuned trucks blow up.

[@semmble2k7]

@mikecude4167 can't blame the tune 🥴🥴🥴 that would make too much sense

[@craighoffman6876]

@@mikecude4167 Poorly tuned trucks blow up. Turning off EGR via an intact tune does wonders.

[@aszaloy5777]

Bad injector seen 100% stock trucks do it

[@semmble2k7]

@aszaloy5777 not when all 8 pistons have the same pattern on top sir

[@ugotsmacked1]

I figured it was a cracked piston. My old 94 Chevy 6.5TD NV4500 did the exact same thing while pulling a 24' enclosed snowmobile trailer up north. I didn't have oil out tailpipe, it was blowing out of every seal. Too much boost and aggressive tune with the compression it had 🤣 long story I rebuilt the whole motor myself and is still on the road to this day.

[@beardedguardian71]

Heck I don't even own a diesel but I really enjoy the content. Plus it's cool you're a fellow Michigander.

[@thegreatalberta9189]

Hole in piston. Did the same on my lmm. #6. I spent $15000 Canadian doing it myself. Complete rebuild with intake and exhaust upgrades.

[@Allaboutactioncc]

My LML was #6 too 🤔 weird lol Video on my story @ssmobn916

[@bs-pu3dg]

I'm starting up a hotshot trucking company. I got laid off from my job in agriculture research a couple weeks ago. I'm almost ready to go with documentation and all the legal paperwork and filings, but I've got some work to do to my truck. I'm going to be running my 2004 lb7 dually. It's got 340k on the clock, but it's paid off and insurance is a heck of a lot cheaper on something that old versus something new. I may run it as long as I possibly can with cash stacked for any repairs, or in the case I were to just go out and buy something newer. Before starting, I'm working on replacing all the ball joints on the front end, replacing the factory oil cooler with a banks oil cooler(mine is leaking), adding an EGT gauge, and doing a few things to the rear axle like replacing parking brake shoes, cables, and the related parts. Hope you get those blocks put on the website. Never know when I might need one 😅

[@turboimport95]

this is the best way, rebuilding a used truck makes the truck like new, vs a new truck that can still tear up and be pricy. new dont mean guaranteed not break down.

[@GRMobileWash]

Another excellent upload Josh! I love the guys at Dirty Diesel lol....the owner is so relaxed and easy to learn from. Keep up the great work brother!

[@TruckMaster]

Thanks 👍

[@wishniwasfishn813]

I learn a ton from these videos.

[@outfitr9703]

The only diesel I've ever owned was a 2001 Ram 5.9 HO I bought brand new. Sold it in 2011, it was noisy. Way less complicated than these new ones though.

[@patricksquires77]

Definitely another 👍 Thanks for this video - I pick up knowledge every time you upload! Appreciated!

[@TruckMaster]

Awesome, thank you!

[@christeferyork209]

Hearing those prices make my stomach churn. I pray my lml lasts another 258k before i even have to think about a rebuild.

[@cjhead804]

tell me about it, just bought my lml in march, deleted it, 70HP tune and cp3 conversion. I do not wanna drop 20k to replace the motor. This doesn’t really happen unless you are towing heavy with a not towing friendly tune

[@Notatruckmaster1968]

Love the content and the new store parts. Keep it coming!

[@zakswindle]

I reused the bolts to hold engines to engine stands

[@TruckMaster]

Nice 👍

[@ronthompson2366]

Great job again. Great collaboration with the guys there. You guys pointed out some good knowledge. I would be curious to see a running talley of the parts and some form of the cost. It's not going to be cheap. Plus, it would be interesting if the customer takes advantage of the rebuild to do some uprades at this point in time. Look into the rest of the drive train even. Buy once cry once... pay me now or pay me later... kind of thing. Overall, it appears to be a good-looking truck. Much cheaper than purchasing a new or perhaps even a new used truck ? That's what would be interesting for your viewers. Some cost comparison, so to speak. Great job.

[@MrC9Oh3]

I bought a brand new duramax in 2010, the engine started smoking after 20,000 miles. Turns out the cam bearings were installed backwards from the factory!

[@NollEngineeringPerformance]

I’ve saved a couple head bolts from almost every application just to cut flutes in them and use as thread chasers for said application then they go in the toolbox. Other than that I don’t stock metric fasteners that big there’s just no need for em

[@bobme2787]

I have been driving tractor trailer for over 30 yrs. I know that some people have a 3/4 or 1 ton diesel to haul trailers. Quite often you could get a good used class 8 single axle day cab diesel. Such as a FLD Freighliner. And they are under $20,000. They have heavier duty brakes than above mentioned trucks. Or even a medium duty Pete or KW. Such as what Coke and Pepsi use. Especially if you are not going long distance. There are plenty of pre emission Freightliners with Detroits out there.

[@tbiker99]

This sort of stuff scares me to death. Love my LBZ, but I'm terrified that I'm going to have a catastrophic failure. With gas motors, I feel I can take care of it myself. With these things, I'm just not sure. I watch my EGTs like a hawk. I pull 15k lbs up 6-8% grades in 100+ temps. Watching to be as educated as possible to avoid this kind of thing.

[@TruckMaster]

LBZ’s are strong though

[@danielmarks2727]

When i was young, my buddies and I were into DSMs. We used to use stock head bolts to play stumpy

[@christophermitchell5136]

You a gem bro ...keep dropping them gems!!!

[@herculesinwyoming]

I have alaways done my own mechanic work, but im not getting any younger. A job like this i would definitely have a shop do it. Great content!

[@mikecude4167]

Tune and injector timing. This truck was tuned and this is the result.

[@2015_Rubicnn]

Not because it was tuned, it was tuned badly.

[@eugeneanderson7984]

Head bolts for this application can be reused 3 times they need to be measured threads need to be excellent. The length need to be exact. There is no bullet proof your 100% correct heat killed this piston all the small pieces had to Exit the turbo is in the exit path. Definately need to check the valve seats. Good job on the video. Im in Colorado have a machine shop at my home. Focus on 15 L. Cummins and Cat. Past is CAt so I’ve worked on everything.

[@CHICOB4261]

I really like the body mount replacements but I don’t like that it doesn’t come with the hardware. Thanks for the video Josh. Love the dirty diamond diesel guys they’re so laid back

[@TruckMaster]

Thanks and I agree I might have that included in the future

[@rodowens9909]

@@TruckMaster The package he opened has all the hardware and looks like the Ford mounts.

[@jeffscott3160]

By the looks of that air filter it appears this truck was beat on and not taken care of. Some people think maintenance is more expensive than a new engine. Sometimes ya can't fix stupid I guess.

[@2015_Rubicnn]

I think those drivers' side exhaust manifolds were for use on the vans with the Duramax. The trucks clear the steering shaft by a mile.

[@DirtyDieseldude02]

Nice Tulip flower pattern on the piston….👍….

[@wreckum56]

This is why you run the old stuff!

[@averyprolawncare5273]

Thanks for the video and knowledge!!

[@AQWbladefire]

I would 100% buy an engine from Truck Master..... for my LLY.

[@98fishingfool]

Replace the injector set while your in their. It’s more than likely over fueled and cause the burn

[@kylepowell4906]

Seen this too many times. Called it

[@ryansanger2754]

OMG THAT LOOKS LIKE HELL TO WORK ON . THATS IT IM BUYING A CUMMINS !

[@johnevans1969]

My cap is off to you young men for the mad skills y'all are showing. My God I am not believing what monstrosities these modern engines are. I'm 60 + years of age and I can't believe what you are doing with all of that CRAP. JESUS those are some complicated assemblies. In my day we'd say that this kind of shit will drive a man to drink! Mad respect gentlemen, mad respect 🙏 👏 try to take care of ya'll's backs and try to avoid any surgeries unless you absolutely have to after you screw'm up. Voice of experience-13 for me so far.

[@moseshancock3336]

Good video to know on this engine.

[@FarmerSteveO]

Well, I had a feeling that much oil in the exhaust and blow by in the crank case that it was a hole burnt in the piston. I’m disappointed though Josh, Earl would’ve saved the owner thousand and used a little JB weld on the hole/crack, gorilla tape for the cylinder head gasket and BOOM, all fixed! 😂

[@TruckMaster]

Earl really missed the boat on this one ☝️

[@N8076U]

"We've seen many bulletproof six ohs blow anyways...now, this isn't a ford..." lol

[@David-yy7lb]

Excellent video as always TM but I have a question why are there leopard skin spots at the top of the cylinder bores?

[@Mike-jh4eo]

What do you recomend for a CP3 conversion for a 2014 LML as far as where to purchase the unit and any other thoughts of what to replace while its being changed out .

[@mikebrasher9005]

Forge them to make high carbon steel blades with

[@Parker-ub8xu]

Never going to be right ever again. There’s a shortage of good mechanics in the mainstream and in the aftermarket world. RIP little Duramax.

[@vanessaziobro1118]

I would love to have you go through my 02 duramax. Suspension and some engine upgrades. It has 155k on it.

[@MechanicTechnicianRepair]

Experience diagnosis master mi respect for yuo saludes noel matute de California

[@blainedamron8533]

you answered my question, why not to buy a Diesel unless you need it.

[@markdavis9384]

I have a 2002 3500 Durga ax and it’s broke losing prime and not the fuel filter

[@joshuacampbell1471]

Josh, I hear a lot of back and forth on selection of head gaskets specifically for the LML. Which do you and Diamond prefer.. most commonly and what I’ve been using are grade C? (I’ve also studded mine as well as the s&s cp3 conversion)

[@TruckMaster]

Mahle grade C is what I’ve always used I believe it’s the standard but if there’s something better out there hopefully someone will comment as well

[@robo1210]

Mahle for sure. Grade C is the thickness. Grace c is what most people go with because they are a little thicker and won’t have to worry about measuring piston protrusion.

[@H2ODiver_Down]

Why in the name of God, can't manufacturers make flip open hoods on pickups like a semi??? So ridiculous to have ro pull the cab! I'm glad I'm not a mechanic anymore!

[@larryvollmar8763]

Josh Do you take in any trucks for repairs. I’m looking for someone to replace return fuel line on 2003 Chevy 2500hd duramax.

[@susiervo1]

The old dirtymax

[@toxic_dieselrc8279]

What brand head gaskets are best to use for a stud job obviously I’m aware of grade C. But what brand are you combining with ARP head studs

[@robo1210]

Mahle.

[@t.l.robinson2162]

When buying exhaust manifolds which do you prefer,PPE or HSP?

[@TruckMaster]

Probably Hsp and only because i don’t need ppe up-pipes the stock oe pipes fit HSP but they both are awesome

[@t.l.robinson2162]

@@TruckMaster cool. Thank you for your answer.

[@whiskeytango9769]

Cracked piston is my guess.

[@NSR7385]

I’m in the “teens” with my LML rebuild

[@swolenation8432]

Hole in piston from bad injector burned a hole like a blow torch

[@diver7150]

Josh,, what is the mileage on this LML? thanks

[@TruckMaster]

I can’t remember I think it was 170k

[@TheKlamminator]

Would you rather cummins swap or duramax swap a squarebody suburban?

[@MichaelBowen-mk6cg]

So do we get a prize if we quest right last week?

[@TruckMaster]

Yes 👍 😂

[@DPats1228]

Hole in the piston from a faulty injector

[@drunkguy_6639]

trying to get to this point in my life to do this

[@35RSkyline]

Sad to see how unreliable these newer diesels are. I blame the EPA

[@coles_customz5416]

Will you be at blake fitzgeralds event in October?

[@Hollywoodhouse74]

When u pulled that head . I swear I heard it whisper... Isuzu....

[@TruckMaster]

Japan made 🇯🇵

[@Hollywoodhouse74]

@@TruckMaster lol....still better the Cummings

[@rickjones6798]

Do you put a keyway in on that crank instead of that little stub that's supposed to hold the gear on and they usually snap off don't know if you ever seen the videos from Dave's Auto guy out of Idaho does a lot of diesels that dude fixes what the engineers that designs all this s***that they didn't do but I enjoy your videos guys keep them coming

[@robo1210]

The pin in the crank is not what holds the balancer from spinning. The bolt and washer hold it from spinning. Dave’s a moron.

[@scottalexander5809]

Who makes that body mount kit?

[@NSR7385]

Cracked piston or pistons

[@KNIGHTOFELEMIA-i7i]

Gone are the days of simply having room under the hood to do a common repair. Now you have to dismantle half the engine or contort your arm into a Tetris piece.

[@Zach_Handle146]

Bought them and didn’t come with hardware ?

[@Ghostwin303]

I just pulled the inercooler out of my 2002 duramax 😢

[@Ghostwin303]

my front body mount won't even tighten up either lol

[@HANZELVANDERLAAY]

Jeeze crazy complicated diesel..oh well...

[@sasquatchcrew]

This guy also looks like Ford Tech Makuloko

[@mattyounis5636]

What's the repair for all the oil in the dpf and scr?

[@jrm88382]

Aint no dpf on it bud haha

[@joshuacampbell1471]

If the owner decides to fix the trailer brake system code.. I’d love to see what the issue is. (Might help me as well) lol

[@Tdaz250]

Start cheap. Usually it’s either the brake switch itself(slider thing…I haven’t had this but have heard it happen to others). On my truck I first replaced the relay on the drivers side behind the rear wheel. It’s like 30 bucks for a delco part. Next is the brake switch on the brake pedal. Again 20-30 bucks. Mine ended up being the brake switch. This is assuming you’ve made sure your fuses are good(I think it’s stud 2?)

[@drunkguy_6639]

had same thing dealer replaced system,

[@joshuacampbell1471]

I started out thus far checking all my fuses, (which were good). Replaced the brake pedal position sensor and recalibrated it. Currently it’s giving me two codes.. C111B, U040. Any time I start the truck, it says service trailer brake system.. I can clear it, and immediately it pops back up. I work out of state, so when I get back home. I’ll put it on the lift, plan to trace wiring, look it over. Test/ replace relays and go from there. (2015.5 lml high country crew cab 4x4). Earlier this year I replaced the trailer brake switch on the dash bezel on left of the steering wheel as well

[@joshuacampbell1471]

I’ve seen a lot of attention through forums, on the relays back there like you’re explaining.. as well as chaffing of wiring along the rear frame rail.. it’s gotta be simple for sure.

[@Tdaz250]

@@joshuacampbell1471 I would bet $5 bucks it’s your brake switch - especially if it’s a higher mileage truck

[@illuminepaint2023]

do you have a Ryan's diesel coupon code?

[@CCCC-tq8yo]

Teens... 13k lol that's crazy

[@alfredohernandez1124]

What its the name of the valve in the cp4 to change to prevent the fuel disaster? Thanks on the lml

[@robo1210]

There is no valve to change to prevent it. Only actual prevention is cp3 swap

[@alfredohernandez1124]

@@robo1210 im talking about that part the one their changer?

[@robo1210]

@@alfredohernandez1124 I didn’t watch the whole video as it’s as cringy as the rest of his. They probably changed the fuel pressure regulator to the “system saver” one however it doesn’t always work to save the system. The only permanent fix for a cp4 on a duramax is a cp3 swap.

[@johnnycarrera4548]

Help me install my new rds turbo on my 2015 duramax please!!!

[@kennethvickoren5372]

Head gasket

[@chrishuisingh1742]

The old rule was pull both heads. I would feel better if I pulled both.

[@Beebop-ow9ge]

The engine isn’t being reused, doesn’t make any difference

[@markkrauss5994]

Bad rings and cracked piston

[@johnjackson8386]

New research is claiming studs are a bad idea

[@robo1210]

Stop watching banks

[@sasquatchcrew]

watching this duramax be that broke makes me feel like im watching a puppy that got beaten.

[@HANZELVANDERLAAY]

Speaking of broke buy a razor 😮😮

[@danielmarks2727]

Dropped an injector

[@matthewgibbs6886]

i miss the days when a diesel had a fuel line coolant lines and airline and a couple of wires. how much more trash can they put on these things.

[@jimwaters1452]

Bad rings

[@greggamandabarkus4235]

Broken piston.

[@t.l.robinson2162]

When you start selling engines will they be stock or will they be modified.

[@TruckMaster]

It will me modified some with the pistons being bored

[@jram92]

What’s his channel

[@TruckMaster]

Dirty Diamond Diesel

[@trentdawg2832]

Can u get away with just putting another slug in the hole???…..i have a LMM sierra with almost 85k mi…..basically still a new truck and not even broken in yet….even after 17 yrs!!!….my wife keeps trying to tell me to get a new truck but i keep telling her that this one isnt even broken in yet and all the newer trucks have all kinds of smog crap and shit that goes wrong with them….had i known my LMM had a dpf system i woulda bought an older cat-eye….oh well….

[@aleskyfinis1025]

Like videos

[@alex_from_texas_]

Huh 🤔

[@stevenllewellyn8906]

Got those spammmmmmmm comments

[@larryw5429]

Make ya want to run out and buy one of these new POS diesels doesn't it!

[@cadeneby5186]

1st

[@chuckthomas8176]

Piston cracked .

[@L15a5haw]

Junk

[@LRS80526]

It’s an Isuzu engine that is not very reliable

[@mattvanatti9531]

Duracrap....

[@TruckMaster]

At least it’s not a Ford 😂

[@mattvanatti9531]

@TruckMaster only in your imagination...7.tree got over half million miles all original and still stroking to this day