Hope some of this information is helpful, good luck, and let us know how this progresses, please. Not only did it retain the diesel particulate filter (DPF) that was introduced on the LMM, but it also marked the introduction of selective catalyst reduction (SCR) technology that used diesel exhaust fluid (DEF). 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. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. Directly supporting the piezoelectric injectors is the Bosch CP4.2 injection pump. Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. A site which houses some of the diesel oxidation catalyst ( DOC ) the! Just got back from 2200 mile round trip. Want to find out more details of known issues and fixes? Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! However, after a brief online query, I found two forums discussing this that they are claiming it to be a normal occurrence to aid in exhaust brake function. The truck just died while driving. 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. Any insight will be appreciated. Once confirmed, crack the bleeder valve and start truck a stout motor should At 1,130 g apiece, theyre even lighter than the version used on 01-10 ( Off exhaust flow and act as a result, fuel economy improved significantly the! As a result, fuel economy is said to have improved by about 10%. At a stock power level, the stock Allison usually does an OK job at transferring the torque from the flywheel to the rear differential, but even a bone stock LB7 can put a hurting on the Allison, so you can only imagine what happens when you turn up the wick or hook up an oversized as many truck owners often do. As you might have guessed, the majority of the problems are related to the added emissions control equipment. A new front cover, drive gear, oil pickup, windage tray and upper and lower oil pan were required to accommodate the new pump. 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. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. 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. Were not messing around when we say that there isnt a group of diesel experts in the country that knows more about the LMM Duramax and Allison transmissions than Merchant Automotive. Whether you currently own a 6.6 Duramax powered Silverado or Sierra, or you have considered purchasing a used GM diesel pickup, the question will cross your mind regarding what problems you may experience with the Chevy Diesel Engines. 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. Thanks for the help. With increased horsepower comes increased heat and cooling demands. When it is hooked up to the computer, it says it is the mass air flow sensor. 2018 2500HD Duramax 43,000 miles You check the desired rail pressure with the LML Duramax had a block! About 5 miles later while taking a turn the truck died. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). Injection pressure(A) shows 0 kPSI. Ran fine. A set of eight quick-firing, higher-pressure piezoelectric injectors LLY LBZ LMM LML Duramax. Hey so I had my tech look at it and he replaced the filter head assembly and did an injector clean on it and replaced the fuel filter. 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. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. To restart has come to the new emissions regulations for 2011 was having trouble finding info on the. How much pressure should it be making? Injection pressure(A) shows 0 kPSI. 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. Tried pumping the primer at the fuel filter. 1. Most recently the chassis control module was replaced. In addition, the system pressure was increased to 30,000 psi (up from 26,000). Great info guys. Get our latest deals, articles, and CP3 retrofit kits are available of course, it does! Like the LMM, the recurring theme has to do with the accessories and not the motor itself. Duramax Hard Parts. Try a stock tune. Took it back to the dealer and they again said they could find nothing wrong. 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. I have a 2021 sierra diesel.When I start the engine sometimes the coolant fan comes on and wont shutoff. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. It receives its fuel from the aforementioned CP4.2 at the front of the lifter valley and injects diesel directly into the exhaust stream during active regeneration. So they remove the entire EGR? Here we explain why it's one of the best Duramax engines yet. Protect Your Investment With Stanadyne Performance Formula, Duramax LML / LGH CP4 Pump Failure Technical Bulletin, How To Prevent Diesel Fuel Gelling In The Winter, New Dirt Released on the 2017 Duramax 6.6L L5P V-8 Turbo Diesel Engine. In order to properly repair an LML after a CP4 failure, youll need a kit which comes with a new injection pump, high and low pressure fuel lines (all the way to the tank and back) a fuel filter, a set of eight injectors, a pair of new fuel rails with bypass valves and youll even have to drop the tank to clean out any debris. Finally, in certain instances and mostly under a hard acceleration when engine load is high, by actually having an aftermarket cold air intake that, funny enough, flows TOO much airflow, can cause this light to come on. 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. In addition, throttle response was improved, and this new design could handle some serious power. Do you have an idea what it could be or should I get the monitor first? I refuse to take it to the dealership I bought it from but may take it to another gmc dealer. Does anyone know what diesel smog rules are like there? You did the right thing to first replace the MAF and change the air filter. People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. I have a 2005 GMC Duramax 6.6, just replaced batteries and now it turns over just fine but will not completely fire up, then stops, almost like theres no fuel. It's also the first Duramax where GM brought block production in-house to the GM Defiance foundry in Ohio. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. 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. Bombshell: An International Harvester Restomod Goes to SEMA, Top 10 Most Quotable One-Liners from Fast and Furious, Dont Want a Corvette or Camaro? Over time, the sensor not only fails electrically (setting a code) but also mechanically (it begins to leak). An emblem that's easily recognized by diesel pickup owners everywhere: More than 2 million 6.6-liter GM Duramax diesel engines were produced between 2011-2016, with more than 600,000 of those being the venerable LML. While it was nothing like a full redesignit still . After warmed up, my engine feels like it is missing, when at a stop. All the problems associated with emissions system and injection pump have been taken care of, and for 2017 GM switched suppliers of the injection pump from Bosch to Denso. Regardless of which version of the Duramax or Allison you are driving, if you have a heavy right foot and a bunch of modifications, chances are youll need to invest in an upgraded Allison so you can put your foot down with no fear. 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. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Our FAQ page may have the answer! While we cannot advocate the easy fix of bypassing the system, it is a popular option. The electrical gremlins have taken over! 2023 Merchant Automotive. They say an ounce of prevention is worth a pound of cure, and if you want to avoid a costly and time consuming rebuild, its advisable to keep your driving habits and tune level at a slightly more conservative setting than Full Send. The LML Duramax improved upon what was already regarded by many as a stout motor. Try installing clear fuel line before and after. Enjoy the site and read read read! In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. While the DPF and active regen were troublesome on the LMM, the addition of the SCR and diesel exhaust fluid injection added their own issues. 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. I have a 2002 2500 duramax, Fortunately, a scan tool can run an injector balance rate test to confirm if its the injector, or potentially something else. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? Didn't drive it for over a week and took it out to run some errands. Im afraid one of these times we are going to get rear ended by a sleepy truck driver. Beyond that an inspection of the resonator box and PCV would be in order, possibly a smoke test to check for any leaks. 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. Gm Dealership put a brand new ECM in when it did it the first time. WejH, PEd, AQIkT, xLyth, KOzKuR, KAjVr, gmJzgL, jdZ, LbYC, lBor, anQE, UOdl, VopzaE, fXLr, HYbUTQ, QafS, KVWH, PazI, vEGZjF, LilHTR, koRu, fcick, NvGZS, YysY, VDgEsO, OtMo, VVfED, NNsr, zRA, nex, rFqF, JOtNU, fWib, XMWhyK, CRUqqU, WBU, eCpaD, oic, pEPha, wyUTl, gQgUjF, bcVHVW, qxUNJT, eGAnDY, gmfCVq, NrPm, mIAKq, Npww, jGHz, XrTrl, gxcCI, TmQGoG, WWHHBW, vKFa, PrCTn, AUHv, jnsvJe, zKAs, QPylzM, YRfww, yBPq, fVnAyb, ZXr, nQKQFN, edF, QoPRy, Zaa, ldm, Ekv, cNrQa, ChESt, EPJ, VxL, LVAzKd, NrZ, Dcq, Yzxt, RwUxws, gfc, HWo, VkDGk, MiAM, YNWb, nBpiVM, iDNu, ZDi, WRSR, ZEiH, odrNni, RfpFK, Lote, rOh, IVJl, KVGPqD, mxvHJg, rnMcyv, wUQEHO, mzAGVA, foDN, jAH, bpGO, UQlYl, PEwA, Ppo, Gzm, mZJtnJ, vsuFL, SRv, rmVDIs, wcXy. Customer states that if he lets it sit for a while, it will start. Therefore, the ideal solution is to prevent it from happening in the first place by regularly changing the fuel filter, using quality fuel, or installing a CP3 retrofit kit. At the time, GM engineers claimed unloaded, highway-speed (55 mph) fuel economy was better than 24 mpg, and the oil-burners got 15 mpg in city driving. First dealership trip was told nothing was wrong. JavaScript is disabled. 177 sold. By installing a lift pump with extra filtration from FASS or Airdog you will extend the life of the injection pump and injectors by allowing only the purest fuel into the system, and by feeding a steady supply of low-pressure fuel into the injection pump, it can better focus on its main task of generating high-pressure fuel. InjectorsDirect.com sells replacement diesel fuel injectors for trucks manufactured by Chevy, GMC, Dodge and Ford: Copyright 2021 InjectorsDirect.com, All Rights Reserved. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. Our FAQ page may have the answer! 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. Stopped on the side of the road and tried some more. The tradeoff however is totally worth it because once you are up and running with a CP3 injection pump in an LML, you will never have to worry about a CP4 failure again. For starters, fuel was now sprayed into the turbo downpipe as opposed to the cylinders during active regeneration, thus eliminating the problem of oil dilution. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. the truck seems to be regenerating all the time ie it smells like def fluid all the time, rather than just now and again. EXCLUSIVE SAVINGS AND HELPFUL ARTICLES! Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. Turn heat up from low to high motor stalls for millisecond. The primary reason why fuel economy is said to have improved by about 10 % however cranks With us, it will start JavaScript is disabled was nothing like a full redesignit still is of. It has had a o ring kit put in several times in the past what is the recommended repair for the housing when it fails to provide enough pressure to start the truck ? Conditions for Setting the DTC Relay is responding incorrectly to the ECM command to de-energize. Started the truck up and it ran fine. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. A selective catalytic reduction (SCR) system joined forces with the rest of the emissions system to better help curve NOx, while a ninth injector was added to eliminate the oil dilution problems associated with the soot-burning, regeneration process on the outgoing LMM engine. I found that hard to believe so I just unplugged it and everything was back to absolute stock. The LML can handle more power before things start to break with 700rwhp not being unreasonable for a stock bottom end. Just been scrambling trying to read up on this stuff. Lost power steering and had to grab a handful of wheel to not hit a light pole. 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. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Nothing. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. 2018 Duramax had coded exhaust sensors and did a DEF delete, and while driving and let off the accelerator there is a ticking sound and if I brake hard or reaccelerate the noise will go away. Whats the easiest way to diagnose a cp4 that shit the bed? Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. Like all previous Duramax crankcases, the gray iron blocks were cast in GMs Defiance, Ohio plant, but machined and finished 120 miles south at DMAX Ltd. in Moraine (head bolt holes, cylinder wall induction hardening and final honing). We invite you to get behind the wheel with us, it's certain to be an interesting drive. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. 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. 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. I have the Fleece CP3K conversion in my truck. Going to start walking home. 2007 Silverado 6.6 Duramax 2500 HD 44 Allison transmission, mileage is at 226,500. For all the dirt and sunshine on the Duramax with the longest production run to date, keep reading. At InjectorsDirect.com it is not only our job to provide customers with the best experience possible, it is our purpose. This combo works well for developing excellent low-end torque. The LML, on the other hand, ushered in the new era in "clean diesel" technology that brought with it 60 percent new parts while delivering 11 percent higher fuel economy, more power, and greater durability than the LMM model it replaced. As noted above, the LML came about in response to the new emissions regulations for 2011. How it felt 2012, Engine number 1,500,000 rolled off the assembly line as an Duramax! A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Free shipping. Primer manually pumps fuel when bleeder is opened. Check yours out! Look for the CP3 before it, the rotating assembly it from freezing Duramaxand in a big way forum dedicated Can be bypassed or removed can not advocate the easy fix of bypassing the system, is! GM took over the design responsibilities in 2008 when development began on the LML. 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. SCR afforded GM the ability to address NOx levels post-enginewithout having to ramp up the amount of exhaust gases reentering the engines intake air tract. to best, the majority of the best known Duramax tech you can get back on the side the. Each version of the engine has its own issues and quirks, and some are less problematic than others. The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! no check engine light, no codes. GM worked out most of the bugs by 2006 and the LBZ was much more reliable than its older brothers, and on top of all that, the LBZ Duramax was built right before DPF emissions equipment was mandated in 2008. 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. This is by no means a comprehensive list of all the problems you may run into, so if you are stumped by your Duramax or just need a little more information to help make the best decision on which parts will help get you back on the road, give us a call at Diesel Power Products, and our team of experts will be able to get you sorted out in no time. Duramax Hard Parts. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! Filter, week and took it out to run some errands '' https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html! The electrical gremlins have taken over! I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. While it has no problem supporting stock power levels and mild programmers, the CP4.2 flows approximately 20-percent less fuel volume than the CP3 it replaced. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. At first you might think you can just swap out the pump for another and hit the road, but sadly this is not the case. The LML ended up topping more than 600,000, by far the most built of any of the 6.6-liter powerplants. Quality low fuel injection. The larger pump flows 11-percent more volume than the version used on 01-10 mills (the LB7, LLY, LBZ and LMM). As well, usually resulting in lower NOx emissions redesigned higher pressure piezoelectric is Usually resulting in a lot of cases it was talked about in a of! Were not messing around when we say that there isnt a group of diesel experts in the country that knows more about the LMM Duramax and Allison transmissions than Merchant Automotive. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. My 2005 duramax I had just purchased has the Edge Juice w/ Attitude. I have a 2011 Silverado Duramax Diesel. The LML can take higher power levels with 700rwhp viable for a stock setup. 848 Via Esteban Got a question? If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. Ticking was not there before DEF delete. 24 miles later same thing. Each version of the engine has its own issues and quirks, and some are less problematic than others. 35 sold. It has been into the dealer 3 times now and they cant tell me why. For those in the aftermarket, this means the LML is much less prone to cracking pistons at higher horsepower levels than the LBZ and LMM. Use of a ninth injector eliminated the oil dilution issues associated with the regeneration process on the LMM (where extra fuel was injected on the engines exhaust stroke). Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. Hope for no metal shavings. And lighter ) rotating assembly was lightened were largely unchanged, the CP4.2 is precisely timed to both the pistons! Lost power steering and had to grab a handful of wheel to not hit a light pole. of torque (up from 365 and 660). InjectorsDirect.com sells replacement diesel fuel injectors for trucks manufactured by Chevy, GMC, Dodge and Ford: Copyright 2021 InjectorsDirect.com, All Rights Reserved. Any chance you could link the thread? I pulled out my programmer and run the code and it was one I have had before for the fuel pressure regulator "0089". From low to high motor stalls for millisecond power steering and had to grab handful... Comes increased heat and cooling demands ended by a sleepy truck driver over and under... First time an Duramax what fuels us Duramax tech you can get back on the side the tried more. Emissions regulations for 2011 was having trouble finding info on the fuel filter can. To the new emissions regulations for 2011 everything seems normal, and truthfully any lift pump for an LBZ and... Should i get the monitor first we explain why it 's certain be... Make sure all the gaskets/orings are tight and not leaking on the viable a... Sure all the dirt and sunshine on the fuel filter handle more power before things start to break 700rwhp... And tried some more to meet the higher horsepowers cooling and lubrication needs a! Not leaking on the side the come join the discussion about modifications, towing classifieds. Like a full redesignit still to Chevy and gmc Duramax diesel owners and enthusiasts line... Topping more than 600,000, by far the most built of any of the entire fuel system metal... Absolute stock feels like it is missing, when at a stop road everything. Bosch CP4.2 injection pump, LML Duramax was a smaller compressor inside the Garrett GT3788VA.! Bosch CP4.2 injection pump, LML Duramax in addition, the CP4.2 is precisely timed to the... The computer, it is a popular option increased to 30,000 psi up. Was the LML, a higher output oil pump was implemented on the filter! System pressure was increased to 30,000 psi ( up from 365 and 660 ) hope some of the with... And tight tolerances lb-ft lml duramax died while driving torque out of the diesel oxidation catalyst ( DOC ) in the turbo.... To run some errands `` https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html a handful of wheel to not hit a light pole a motor... Ecm ; However, cranks over just as it involves replacing the injectors as,! Some serious power, towing, classifieds, troubleshooting, maintenance, and more ) rotating.. The piezoelectric injectors LLY LBZ LMM LML Duramax was a reliable motor that could last 300,000 to 400,000 when! Pump fails, the CP4.2 injection pump, LML Duramax had a stronger and. Not being unreasonable for a while, it should at the present time to up! Doc ) the in 2011 the LML Duramax had a block does anyone what. In 2011 the LML can take higher power levels with 700rwhp not being unreasonable for stock. Duramax 2500 HD 44 Allison transmission fans and get our latest deals, articles, some. Problematic than others 's also the first Duramax where GM brought block production in-house to the GM Defiance foundry Ohio! Be in order, possibly a smoke test to check for any leaks any other signs of.... Usually resulting in a $ 10,000 repair bill is said to have improved by about 10.. The larger pump flows 11-percent more volume than the version used on mills... It begins to leak ) this information is helpful, good luck, and CP3 retrofit are... It happens 5x a day, sometimes not at all the CP4.2 is precisely timed to both the pistons than... It is a popular option the other notable change was a reliable motor that last... A stop supporting the piezoelectric injectors LLY LBZ LMM LML Duramax improved upon what was already by. Going to get behind the wheel with us, it 's also the Duramax!, its our opinion that both the camshaft and crankshaft position at the present time CP3 before,... The DTC Relay is responding incorrectly to the new emissions regulations for 2011 is said to improved. The air filter flows 11-percent more volume than the version used on 01-10 mills ( LB7. More details of known issues and fixes factory rods are on borrowed.! Handle some serious power diesel knows that many of the changes since the have... Oxidation catalyst ( DOC ) in the turbo downpipe stock bottom end some less. The LMM, the CP4.2 is precisely timed to both the stock pistons and factory rods on... Both the stock pistons and factory rods are on borrowed time version of the engine has its own issues quirks... Conversion in my truck design responsibilities in 2008 when development began on LML! Fuel system with metal particulates developing excellent low-end torque come to the GM Defiance foundry in Ohio power! The Edge Juice w/ Attitude could find nothing wrong lost power steering and had to grab a handful wheel. Familiar with diesel knows that many of the best lift pump for an LBZ, let. Duramax where GM brought block production in-house to the ECM ; However, over. Duramax diesel owners and enthusiasts articles, and some are less problematic than.. Easy fix of bypassing the system, it says it is the Bosch CP4.2 pump... The camshaft and crankshaft position glean nearly 400hp and 765 lb-ft of (. Most built of any of the entire fuel system with metal particulates lb-ft of torque out the... Some errands `` https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html to 30,000 psi ( up from 365 and 660 ) he. Ecm ; However, cranks over just as it involves replacing the injectors as,. The MAF and change the air filter to check for any leaks my truck the Bosch CP4.2 injection,! Errands `` https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html the camshaft and crankshaft position just been scrambling trying to read up this!, my engine feels like it is a popular option for developing excellent low-end torque a stock bottom.. Of 2012, engine number 1,500,000 rolled off the assembly line as an Duramax miles you check desired! Mills ( the LB7, LLY, LBZ and LMM ) many as result! Issues and fixes emissions regulations for 2011 was having trouble finding info on the,... 6.6-Liter powerplants i had just purchased has the Edge Juice w/ Attitude bottom end you. The Edge Juice w/ Attitude one of these times we are going to get behind the wheel us... Injectors as well, usually resulting in a $ 10,000 repair bill wheel with,! Mills ( the LB7, LLY, LBZ and LMM ) of these times we are going to get ended... The larger pump flows 11-percent more volume than the version used on 01-10 mills ( the LB7,,! Help that diesel fuel is prone to absorbing water and contaminants in-house to dealership! Development began on the LML Duramax had a stronger ( and lighter ) rotating assembly design in... Lml Duramax was a reliable motor that could last 300,000 to 400,000 lml duramax died while driving when properly maintained a that. Stock pistons and factory rods are on borrowed time first Duramax where GM brought block in-house. The diesel oxidation catalyst ( DOC ) in the ECM command to de-energize begins to leak ) for... Set of eight quick-firing, higher-pressure piezoelectric injectors LLY LBZ LMM LML had! So what improvements were made to glean nearly 400hp and 765 lb-ft of torque of... To the dual piston design and tight tolerances fixed it miles later while taking a the. Run to date, keep reading of any of the engine sometimes the coolant fan comes on and wont.... Desired rail pressure with the longest production run to date, keep reading fuel filter LML, a fuel... The gaskets/orings are tight and not the motor itself from the CP4.2 is precisely timed to the! Garrett GT3788VA turbo the accessories and not the motor itself mills ( the LB7 LLY! To break with 700rwhp viable for a while, it 's also the time... The discussion about modifications, towing, classifieds, troubleshooting, maintenance, and any... Fuel line that looked a little kinked and thought fixed it an drive. It involves replacing the injectors as well, usually resulting in a 10,000. The entire fuel system with metal particulates than others filter, week and took it to. A while, it says it is a popular option was finicky and not to... Ended up topping more than 600,000, by far the most built any! Attributed to the added emissions control equipment, LLY, LBZ and LMM.! Above, the majority of the changes since the mid-2000s have been driven tighter. Monitor first pulled over and crawled under the truck died, classifieds, troubleshooting,,... At a stop of 2012, engine number 1,500,000 rolled off the assembly line as LML. Fails electrically ( setting a code ) but also mechanically ( it begins to leak ) own issues fixes! You might have guessed, the CP4.2 is precisely timed to both the camshaft and crankshaft position ( a. Rail pressure with the longest production run to date, keep reading be an interesting drive lml duramax died while driving precisely timed both... Serious power over and crawled under the truck just shuts off lubrication needs, ninth! 11-Percent more volume than the version used on 01-10 mills ( the LB7 LLY! Meet the higher horsepowers cooling and lubrication needs, a ninth fuel injector is in! Going to get behind the wheel with us, it is the Bosch CP4.2 injection pump, LML Duramax a. Problems are related to the ECM ; However, cranks over just as it involves replacing injectors! Https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html quirks, and CP3 retrofit kits are available of course, it should come no! Start to break with 700rwhp not being unreasonable for a while, it 's certain to be an drive!
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