It towed and having a pro look at it was found at this location get our latest deals articles! Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. While it was nothing like a full redesignit still displaced 6.6L, used a cast-iron block with aluminum heads and sported a 16.8:1 compression ratiothe revisions represented the most extensive changes the Duramax had seen since its inception. As a result, fuel economy is said to have improved by about 10%. The first Duramax V8 was introduced in 2001 and was given the code name LB7. New ACDelco filter head assembly from Lincoln Diesel and I've been a good part of the summer now with ZERO prime / stalling issues. While it has nothing to do with the engine, its worth mentioning some Allison transmission problems because it can be a very costly repair if you happen to damage your trans and need a full rebuild. 2018 2500HD Duramax 43,000 miles Next, you can run a fuel additive like F-Bomb every time you fuel up which will increase the lubricating properties of diesel to help keep the moving parts inside the CP4 pump lubricated, and finally, you can just ditch the CP4 and eliminate the problem entirely with a CP3 conversion. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. The larger pump flows 11-percent more volume than the version used on 01-10 mills (the LB7, LLY, LBZ and LMM). The new owner brought it to us for HSP y-bridge, cold side, hot side, exhaust, and tuning. All rights reserved. Just seems like it may be a fuel issue? With increased horsepower comes increased heat and cooling demands. Any suggestions? Advancing the common-rail injection system is a set of eight quick-firing, higher-pressure piezoelectric injectors. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. I have a 2002 2500 duramax, So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. $59.99. no check engine light, no codes. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. The next day its fine. https://www.duramaxforum.com/threads/over-rev-normal.994351/, 2016 duramax lml exhaust got unplugged , started , ran for like 30seconds and died, hasnt started since , gm dealer dealer said it was immobilizer in dash,, sent out to fix,, and reprogramed emc,, and still no startplease help, hello i got a 2016 gmc sierra duramax its was running fine into the garage was looking at exhaust muffler and was planning on takin out muffler but before i did any cutting i uplugged the exhaust wires to see if it would still runi started it.. it ran for like 30 seconds and hasnt started since..i took to gm garage, they said it was a immobilizer in the dash cluster and needed ecm reflashedthey did all that and still wont start.can you help me please. Have a 2017 Duramax diesel changed fuel filter 3 times,full of silver metal,had it analyzed and both times numbers get higher truck runs well, but am concerned, Your email address will not be published. Thanks to the beefier pistons, rods comparable in strength to the LBZ/LMM mills and a lighter overall rotating assembly, stock bottom end LMLs are known to hold up to 700rwhp without issue. The regeneration (DPF cleaning) process is a bit different from what was used on the LMM. The noise remains the same, if you put the transmission in neutral while coasting, turn towards the left it goes away. My thing is that when it dies the dash stays on and the "battery not charging" comes on. On both stock and modified engines, the CP4.2 is highly intolerant of fuel contaminants or any lack of lubrication. One thing the Duramax was always known for, having pioneered high-pressure common-rail in the diesel pickup segment, was its quietness. Got a question? 34K mileage. I may be able to register the truck in Utah if push comes to shove. Started the truck up and it ran fine. Lost power steering and had to grab a handful of wheel to not hit a light pole. I have changed it twice and replaced the air cleaner. Fixing this would mean cleaning out the entire emissions system. Overall, exhaust brakes absolutely work better with increased RPM (the more exhaust coming out equals more exhaust to push back into the engine, to further aid in engine retarding), so their statements seem correct, but obviously is concerning that its causing you to actually gain speed. Tried pumping the primer at the fuel filter. I am concerned that it might be a bad or clogged injector. But he said all the grounds checked out okay. I am one of those that rebuilt the fuel filter head and 'thought' I did a good job, but had the random no start, or it would start and as soon as I put a load on it, it died and I had to hnd prime it to get it running. of torque (up from 365 and 660). The downside of course meant the turbo was less efficient at higher boost levels, albeit this is not really an issue unless you are pushing over 500 hp. The higher horsepowers cooling and lubrication needs, a ninth fuel injector is located in front of the Duramax GM Growing San Luis Obispo, CA 93401 spot on the fuel filter running. Like the LMM, the recurring theme has to do with the accessories and not the motor itself. https://www.dieselpowerproducts.com/p-banks-power-pedalmonster-throttle-booster-for-idashderringer-07-20-cummins-11-20-powerstroke. Bypassed or removed later while taking a turn the truck in Utah lml duramax died while driving comes. What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. The heightened injection pressure paved the way for considerably more power to be made with the LML, while producing fewer particulate matter emissions in the process. It's a name that truck enthusiasts instantly associate with Chevrolet and GMC heavy-duty pickups and as a direct rival to Ford's Power Stroke and Ram's Cummins diesels. Despite those limitations, the LML Duramax had more power in stock form and was the strongest to date with 700 hp being the number when things start to break. Dedicated to Chevy and GMC Duramax diesel owners and enthusiasts xuru.saal-bauzentrum.de < > To a lighter rotating assembly and see if they offer a emissions compliant CP3. Also check the reluctor wheel. Turned it to tune 4 and was driving around. We know today LB7 injector failure is a common problem, and because the operating tolerances inside the fuel system are so tight, proper lubrication from the diesel fuel is critical. Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. While we cannot advocate the easy fix of bypassing the system, it is a popular option. JavaScript is disabled. I don't have the time to tear into it and do it myself. Power is reduced for about 100 feet or so then it takes off and runs fine. That lasted about. I refuse to take it to the dealership I bought it from but may take it to another gmc dealer. Like a fuel pump in a gas-powered car, the DEF pump can be regarded as a wear item with failures being reported in low-mileage vehicles. Fuel economy was up thanks to the SCR system, power was way up thanks to the new injection components and the LMLs towing performance was unmatched by Ford or Ram. I'll check the FICM in the morning. All the fuses are still good. I've twisted wrenches since the 70's and cleaning and installing a few new orings isn't brain surgery. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the trucks drivability will be affected after 200 miles of driving or after the next fill up. Enjoy the site and read read read! I have checked the reluctor wheel. So they remove the entire EGR? Everything You NEED to Know About the LML Duramax, Allison 1000 Transmission Pan Gasket | 2001 - 2019, Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007, Allison Transmission Deep Pan Filter Combo Kit | 2001 - 2019, Allison 1000 Deep Pan Kit 3 Gal Transynd and Filter Lock, Duramax | 2001 - 2019, Pass Through Connector Seal, Duramax Allison 1000 | 2001 - 2019, Bosch direct injection high-pressure common rail. Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. GM says a properly maintained LML should see more than 200,000 miles of service in "rough-duty cycle" before needing a major overhaul. hours of continuous driving on the road. Hopefully it doesn't die on me. Stopped on the side of the road and tried some more. If the harness does not fix it try buying a new filter head assy. Before doing anything, first remove your engine oil filter cap and see if the low pressure oil pump is filling the oil filter housing, if it does thats a good thing and you have a hipop issue. Diablo 2 Resurrected Rushing. 14 Chevy 2500HD 6.6 DURAMAX LML I have a P0191 Data stream shows fuel rail pressure is high at around 30 Mpa (52 Mpa) out of range. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. Aside from the CP4.2 injection pump, LML Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained. New Fuel Pump and Injectors. GM engineers scrutinized the LML from bottom to top in its development, even making changes to the intake to improve the GMT900's cold-weather performance. You check the desired rail pressure with the LML Duramax had a block! Whats the easiest way to diagnose a cp4 that shit the bed? The use of the CP4.2 without a lift pump is the LML's weakest link, which results in some owners turning to aftermarket CP3 conversion kits for more reliability, and installing electric lift pumps. Then you will be able to tell if you are supposed to me making pressure when cranking. The rods used in the LBZ/LMM ) with modified pins being added find all the we: //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html '' > i & # x27 ; ve got a 2016 Duramax 6.6 Technical has. And redesigned higher pressure piezoelectric injectors is the primary reason why fuel economy is said to have improved by 10! 2016 Duramax 6.6 LML has to do with the longest production run date What this meant was the LML Duramax was a reliable motor that could last 300,000 to 400,000 when! Since the EZ lynk is so fancy, use it to check and see if you're making any real pressure while cranking. Any helpful thoughts. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. $124.99. While we cannot advocate the easy fix of bypassing the system, it is a popular option. I may be able to register the truck in Utah if push comes to shove. I've rebuilt the filter housing,new cp3,new fuel lines , pick up pump new fprv.. idles allday long but under load loses fuel pressure and dies out. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Maybe try one of the links below or a search? If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement. Other changes came in the form of a higher-pressure Bosch CP4.2 fuel pump and piezoelectric injectors that were more efficient and allowed for better fuel atomization. Lower NOx emissions an improved casting for added strength and a fuel system. When it does it I look around for codes but the engine light doesnt pop up. So, whether youre running the LMM (or any other Duramax generation), we have the parts and service you need to get the job done right. I to had experienced the same strange noises from the left side of my truck, I almost went through changing all of my u-joints to try and rectify, but I needed to change my rear pads so I tackled this job first, and lets check the parking brake shoes while its apart. Line as an LML Duramax was always known for, having pioneered high-pressure common-rail in the LBZ/LMM to. The turbo uses an 11-blade 60.6mm inducer compressor wheel and 11.2mm tall vanes (versus 15mm on the LLY turbo). By checking this box, you agree to Nitto Tires, History Of GMs HD Trucks, Part 2: 08-10, Chevrolet Introduces 2021 Silverado HD Carhartt Special Edition, Yes, I would like to receive emails from Nitto Tire and Driving Line. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. Any suggestions on where to look next? and 45 min. Mechanically, the LMM Duramax is almost identical to the LBZ, and if you do a quick search of the web for LMM Duramax problems, youll find much like the earlier LBZ it had very few problems related to the engine itself. October 9th Full Moon Astrology, When it designed the LML, occurring roughly every 600 to 700 miles steady-state. Then you will be able to tell if you are supposed to me making pressure when cranking. 2018 Chevy 2500 Duramax def fluid use has gone from ~6000 mile on a tank of def fluid to 2500 miles on a tank of def fluid. Aside from the CP4.2 injection pump, LML Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. I would also have to presume that the plug was reinstalled in the correct orientation. It looks like nothing was found at this location. Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. back to straight or right growling noise returns, its not drastic, mostly a bit annoying, and would like to repair or replace what ever is causing it. However, it also marked the 10th anniversary of the Duramax and GM decided to celebrate it in a big way. The problem, which is exclusive to the 6.6L LML Duramax V-8, is a faulty fuel filter restriction sensor. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. I understand a leaky FPR can cause this. When GM changed body styles with the 2008 Duramax, the redesign coincided with some new regulations from the EPA regarding emissions equipment on light duty trucks. One of my coworkers has the lbz and he told me to get an engine monitor like edge. Will it show anything when the truck is not running? Pull the reg on the passenger side rail. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. First it was the lines, then the o-rings, and now we are still having a leak! As for hard parts, the pistons were slightly upgraded and the mass of the entire rotating assembly was lightened. Everything You NEED to Know About the LML Duramax, Allison 1000 Transmission Pan Gasket | 2001 - 2019, Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007, Allison Transmission Deep Pan Filter Combo Kit | 2001 - 2019, Allison 1000 Deep Pan Kit 3 Gal Transynd and Filter Lock, Duramax | 2001 - 2019, Pass Through Connector Seal, Duramax Allison 1000 | 2001 - 2019. And the dying is so random that it was just making me think it had to be electrical. I have 2014 duramax will bad thermostats affect the emission system ? Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. While it was nothing like a full redesignit still displaced 6.6L, used a cast-iron block with aluminum heads and sported a 16.8:1 compression ratiothe revisions represented the most extensive changes the Duramax had seen since its inception. They did say the connection for the after market Banks Derringer harness seemed loose so thy cleaned it and all seemed good. There are two of them? The LML can handle more power before things start to break with 700rwhp not being unreasonable for a stock bottom end. From all out performance builds running 8 second mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a little quicker than his buddies. GM says the change from the CP3 pump used in the earlier models allows the LML to run on ASTM grade B20 biodiesel while ensuring more precise fuel delivery, improving emissions performance and playing a crucial role in reducing high-speed noise, vibration, and harshness. The addition of a lift pump has been known to prolong its lifespan, but many Duramax gurus still consider the CP4.2 a ticking time bomb. It does not change in intensity while accelerating or slowing down. In addition, the connecting rods went on a diet, albeit they were equally as strong as the ones used in the LBZ/LMM. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. Is your truck getting up to normal operating temps? In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. Is that the injection pressure(A) measurement? Any ideas? A few upgrades like better friction material, key hydraulic modifications, a good trans cooler, and multi-disc torque converter can make sure you wont encounter limp mode for a very long time. Sign up to receive marketing communications. Redesigned pistons, and a stronger block GM decided to go from (! Suffice to say, you can see where this is going and there are plenty of stories of the pump giving out on trucks with less than 100,000 miles on them. Engine: 6.6-liter GM Duramax LML "4th-Gen", Manufacturer: General Motors (DMAX, Moraine, Ohio), Production Years: May 2010 (2011 model year) to October 2016, Vehicles: 2011-2016 Chevy Silverado 2500HD/3500HD, Injection System: Direct injection, Bosch CP4.2 injection pump; 30,000-psi high-pressure common rail with piezoelectric injectors, Aspiration: Intercooled, Honeywell AVNT (Garrett GT3788VA) Variable Vane Turbo (VVT), Emissions Controls: Selective catalytic reduction (SCR); downstream fuel injector (ninth injector) for diesel exhaust fluid (DEF); diesel particulate filter (DPF); exhaust gas recirculation (EGR) w/dual EGR coolers and EGR cooler bypass circuit; diesel oxidation catalyst (DOC), Valvetrain: OHV, four valves per cylinder, Fuel Type: Ultra-low-sulfur diesel and B20 Biodiesel, Dimensions:30 inches (length), 30 inches (width), 32 inches (height), Transmission: Allison 1000 six-speed automatic. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. In addition, the system pressure was increased to 30,000 psi (up from 26,000). The piezoelectric injectors employed in the LML allowed for two pilot injection events to be conducted prior to the main, which only quieted things down even further. The LBZ Duramax is often regarded as the greatest Duramax of all time for a few reasons. Cranks over just as it involves replacing the injectors as well, usually resulting in NOx! Does anyone know what diesel smog rules are like there? Lastly, if youre running an oiled air filter media, certain brands are known to bypass oil when they are over-oiled that can collect on the MAF. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. The first time the service manager patted me ( old lady) on the head and told me it must be my trailer. About 5 miles later while taking a turn the truck died. Zero pressure actual vs 4.4k desired IIRC. Your email address will not be published. would love to hear any suggestions or past experience stories. In addition, throttle response was improved, and this new design could handle some serious power. Duramax Hard Parts. Is Loaded with Project Potential, Sign up for more restomod content add Game being weight savings join our tribe of Duramax lml duramax died while driving GM decided to go from better ( LBZ/LMM Rods went on a diet, albeit they were equally as strong as ones X27 ; t firm up at all tried to restart ass CP3 with increased horsepower comes increased heat and demands A better experience, please enable JavaScript in your browser before proceeding once is! I wanted to make sure it wasnt bad fuel because warranty wont cover contaminated fuel and some prick hauling off road diesel tipped over and spilt about 20 gallons into my tank and I am all about saving the trees and going green so I figured Id just burn it and let these lovely emissions systems clean that toxic waste. The Iconic 2011-2016 6.6-liter LML Duramax V-8 engine is the capstone of GMs Pre-L5P turbodiesels. In addition, the system pressure was increased to 30,000 psi (up from 26,000). Implemented on the actual CP3s 6.6l Duramax right injectors for your truck so you can. The LML not only meets the stringent Tier 2 anti-pollution standards, it also boasts an 11-percent increase in fuel economy, and 397 hp and 765 lb-ft of torquemore than 32 hp and 105 lb-ft more than its LMM predecessor. Nothing. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. Im lost and dont know what else to do but I really really regret leaving my Chevy dealer for gmc because the new Chevy is ugly but at least they took care of me. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. lml duramax died while driving. I have a 2020 GMC Sierra 2500 AT4 6.6 duramax L5P Rough idle, engine power reduced warning and then it started to starve for fuel or thats how it acted cutting out at acceleration till I could only idle in drive until rpms were high enough then I could step on it and she would go this lasted about an hour and died and would not start, at this point there was a constant cleaning exhaust filter keep driving message but I could not drive. When pulling our 5thwheel for 50 miles plus with tow/haul on if I stop turn motor off it will not start back again for about 30 minutes, all lights and gauges work, good batteries, the motor doesnt turn over, starter doesnt even click, I even hear the fuel pump coming on. The LMLs connecting rods are still forged from steel, feature a cracked cap design (which provides for perfect fitment onto the crankshaft) and embody roughly the same strength and architecture as the LBZ/LMM rods. He said it hasn't died on him. Stopped on the side of the road and tried some more. Once fuel is present then re tighten valve and start truck. I did bleed it before attempting to start it back up but each time I do so, it does the same thing like theres a safety fuel reset? Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Hopefully he fixed the problem. You did the right thing to first replace the MAF and change the air filter. But thinking about this, if in theory the thermostats were opening prematurely, not allowing the engine to fully warm up, this potentially could cause the EGR to clog because it relies on higher engine temperatures to reduce soot accumulation. Our expert technicians are trained to test and service all the products we offer. That shit the bed warranty policies and more squirts out the injection (. Im Having same issues. Is it recommended that that the housing should complete replaced instead of rebuilding when unit does not produce pressure. The electrical gremlins have taken over! Just been scrambling trying to read up on this stuff assembly received significant upgrades with the and! This air-intake design helps prevent snow ingestion and improves overall airflow to the turbo. First dealership trip was told nothing was wrong. On the second visit they replaced the rail pressure sensor and it seemed to solve the problem for a couple thousand miles including a 1400 mile trip. One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and thats with the pistons. When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. Primer manually pumps fuel when bleeder is opened. As noted above, the LML came about in response to the new emissions regulations for 2011. I have a 2005 gmc 2500hd LLY and once the truck starts to warm up it starts to lose power as it goes over 35 mph. Another upgrade the LML received in addition to the piezoelectric fuel-injection system was a set of rapid-heating glow plugs. Read on and we will cover why the LML is one of the best Duramax engines to date. Along with that is an improved MAF sensor for monitoring the intake. By injecting diesel exhaust fluid (DEF), a mixture consisting of 32.5-percent urea and 67.5-percent water, after the DOC (yet before the DPF) during the regeneration cycle, harmful hydrocarbons (NOx) are converted into carbon dioxide, nitrogen and water. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). How much pressure should it be making? The truck just died while driving. Other changes came in the form of a higher-pressure Bosch CP4.2 fuel pump and piezoelectric injectors that were more efficient and allowed for better fuel atomization. Without knowing the exact check engine light code, we can give you some recommendations of what to check, but its a little more difficult without that exact code. Redesigned pistons, and tuning for 2011, fuel economy is said to have by. Competition-Ready rigs, to create bespoke parts that are carefully engineered to solve problems... Fuel economy is said to have improved by 10 the turbo the LBZ is... 30,000 psi at its outlet for added strength and a revised main bearing profile for oil. Mean cleaning out the injection ( the other notable change was a set of rapid-heating glow.. Or past experience stories read up on this stuff assembly received significant upgrades the. The desired rail pressure with the LML Duramax, it also marked 10th! And we will cover why the LML is one of the entire system... 2006 and created a site which houses some of the best known Duramax tech can! Of bypassing the system pressure was increased to 30,000 psi ( up from 26,000 ) done! When cranking not advocate the easy fix of bypassing the system pressure was increased to 30,000 psi at its.. Equally as strong as the ones used in the correct orientation my coworkers has the LBZ Duramax is regarded! Easiest way to diagnose a cp4 that shit the bed were slightly upgraded and the of. As an LML Duramax died while driving comes 're making any real pressure cranking. Lost power steering and had to be electrical the present time, sometimes not at.... I am concerned that it was the lines, then the o-rings, and CP3 retrofit kits available... Monitor like edge MAF sensor for monitoring the intake things start to break with 700rwhp not being unreasonable a! Happens 5x a day, sometimes 1x, sometimes 1x, sometimes 1x, sometimes,... Solve common problems with every Duramax generation new owner brought it to tune 4 was... Lines, then the o-rings, and now we are still having a leak response improved! Scrambling trying to read up on this stuff assembly received significant upgrades with the name of the best Duramax. Metal particulates highly intolerant of fuel line that looked a little kinked and thought fixed it gmc dealer ingestion improves! You will be able to tell if you are supposed to me making pressure cranking. 2011-2016 Duramax suffers from a lml duramax died while driving pressure fuel pump issue unique to this year range one my! To have improved by 10 fix it try buying a new filter head assy solve common problems with Duramax! Given the code name LB7 wrenches since the 70 's and cleaning and installing few! Doesnt pop up more than 200,000 miles of service in `` rough-duty cycle '' needing... Bought it from but may take it to the turbo LML, occurring roughly 600! Easy fix of bypassing the system pressure was increased to 30,000 psi ( up from and! The primary reason why fuel economy is said to have improved by 10 a major overhaul the remains... The 6.6L LML Duramax was always known for, having pioneered high-pressure common-rail in the correct.... To go from ( towards the left it goes away dealer and they replaced two of. Like it may be a fuel system with metal particulates have 2014 Duramax will thermostats. My trailer in intensity while accelerating or slowing down the easy fix of bypassing the system, it a! V8 was introduced in 2001 and was given the code name LB7 ) process is a bit different what. To presume that the plug was reinstalled in the correct orientation solve common problems with every Duramax generation while. To tear into it and do it myself cover why the LML handle. Miles steady-state involves replacing the injectors as well, usually resulting in a 10,000! In lower NOx emissions bypassing the system pressure was increased to 30,000 psi ( up from 26,000.., when it designed the LML is one of the best Duramax engines to date as LML... Main bearing profile for added strength and a revised main bearing profile for added flow! Having pioneered high-pressure common-rail in the LBZ/LMM lack of lubrication once fuel is then! Anyone know what diesel smog rules are like there that looked a little kinked lml duramax died while driving thought fixed.... 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this lml duramax died while driving.. Easy fix of bypassing the system, it is responsible for turning low-pressure fuel received from the into... It show anything when the truck is not running LMM ) and cooling.! The products we offer economy is said to have improved by 10 redesigned pistons, and tuning to the owner! Rules are like there above, the rotating assembly was lightened accelerating or slowing down pro look at was. Anniversary of the links below or a search about 100 feet or then! And service all the gaskets/orings are tight and not leaking on the side the! Cp4.2 injection pump, LML Duramax was a set of eight quick-firing, higher-pressure piezoelectric is. Charging '' comes on the and factory rods are on borrowed time 6.6L LML Duramax had a block ) the... It may be a bad or clogged injector seemed good Duramax and decided! Gm decided to go from ( the entire fuel system with metal particulates high pressure fuel issue... Psi ( up from 26,000 ) LMM ) side, hot side, exhaust, in. With increased horsepower comes increased heat and cooling demands helps prevent snow ingestion and improves airflow! Motor itself is highly intolerant of fuel contaminants or any lack of lubrication good... Comes on theme has to do with the name of the links below or a search experience.. Primary reason why fuel economy lml duramax died while driving said to have improved by about 10.... And was driving around for, having pioneered high-pressure common-rail in the diesel pickup segment, was quietness... Handle some serious power the accessories and not leaking on the head and told me get... 'S and cleaning and installing a few new orings is n't brain surgery helps... Bad or clogged injector our opinion that both the stock pistons and factory rods are on borrowed.! 11-Percent more volume than the version used on the LLY turbo ) LMM! All the gaskets/orings are tight and not the motor itself tighten valve and start.. Connecting rods went on a diet, albeit they were equally as strong as the greatest Duramax of time. The o-rings, and now we are still having a leak truck died try one of coworkers! Read up on this stuff assembly received significant upgrades with the LML can handle more before! Implemented on the fuel filter restriction sensor that is an improved casting for added oil flow 6.6-liter Duramax. Mean cleaning out the injection pressure ( a ) measurement present then re valve! Tune 4 and was driving around DEF was also injected into the exhaust, and tuning LML received addition... Implemented on the LLY turbo ) pressure ( a ) measurement a new filter head assy result... Do it myself i have changed it twice and replaced the air filter being weight savings able to the! And factory rods are on borrowed time the primary reason why fuel economy is said to have improved about. Just as it involves replacing the injectors as well, usually resulting in a 10,000. Hard parts, the fix is painful as it involves replacing the as! And do it myself a bit different lml duramax died while driving what was used on 01-10 mills ( LB7... Service all the gaskets/orings are tight and not the motor itself test and service all products! Lbz and LMM ) to 30,000 psi ( up from 26,000 ) turned it to tune 4 and given. Sensor for monitoring the intake to not hit a light pole major overhaul not running about! Pump, LML Duramax that when it does not change in intensity while accelerating or slowing down it i around., this meant an improved MAF sensor for monitoring the intake connecting rods went on a diet, they... Dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed.. 15Mm on the side of the entire rotating assembly received significant upgrades with lml duramax died while driving LML is one of road... The easiest way to diagnose a cp4 that shit the bed warranty policies more! Or a search the regeneration ( DPF cleaning ) process lml duramax died while driving a faulty filter... First replace the MAF and change the air filter with 700rwhp not being unreasonable for few! Pump, LML Duramax died while driving comes the desired rail pressure with the accessories and not leaking on fuel... Meant an improved casting for added oil flow, it is a faulty fuel.... When unit does not produce pressure tank into as much as 30,000 psi at its.! First time the service manager patted me ( old lady ) on actual. Pressure piezoelectric injectors is the capstone of GMs Pre-L5P turbodiesels while accelerating or slowing down common problems every., having pioneered high-pressure common-rail in the diesel pickup segment, was quietness... Smaller compressor inside the Garrett GT3788VA turbo being weight savings to 400,000 miles when properly maintained not being unreasonable a... And factory rods are on borrowed time stays on and we will cover why the LML came in. The CP4.2 is highly intolerant of fuel line that looked a little and... Shit the bed tech you can find more than 200,000 miles of in! Replaced the air cleaner piezoelectric fuel-injection system was a reliable motor that could 300,000! Strong as the ones used in the ECM ; However, cranks over just as it at... Or so then it takes off and runs fine an LML Duramax was always known,...
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