Will it show anything when the truck is not running? Lost power steering and had to grab a handful of wheel to not hit a light pole. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). For a better experience, please enable JavaScript in your browser before proceeding. In addition, the system pressure was increased to 30,000 psi (up from 26,000). Sign up to receive marketing communications. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. Any ideas? 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). Once the unfinished heads arrive at DMAX Ltd., each chunk of aluminum is CNC-machined for head bolts, valves and injector hold-downs. Customer states that if he lets it sit for a while, it will start. 848 Via Esteban 182,xxx miles My truck randomly shuts off at an idle and while driving. 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. Directly supporting the piezoelectric injectors is the Bosch CP4.2 injection pump. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? 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. I don't have any tools to crack the bleeder. Ran fine. 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. When combined with a more efficient fuel burn (less soot), regen cycles occurred less frequently, approximately every 600 to 700 miles (as opposed to 400 miles on the LMM). Maybe try one of the links below or a search? In addition, throttle response was improved, and this new design could handle some serious power. $124.99. 35 sold. Didn't drive it for over a week and took it out to run some errands. Chances are, if you're looking at this page, you're well aware of the problem. Thanks for the help. An improved casting and revised main bearing profile (to enhance oil film thickness in this vital area) highlight the key areas of improvement on the LML block. Primer manually pumps fuel when bleeder is opened. Any chance you could link the thread? Coasted down a hill and put it in neutral and tried to restart. Whats the easiest way to diagnose a cp4 that shit the bed? The fifth generation common-rail V8 was given the RPO code LML. Got a question? Did you check error codes? 177 sold. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Find all the information about our shipping, returns, warranty policies and more. Among them were lighter connecting rods, redesigned pistons, and a stronger block. In simple terms, DEF consists mostly of water and there are three heaters that prevent it from freezing. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. Just been scrambling trying to read up on this stuff. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. Tried pumping the primer at the fuel filter. 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). With increased horsepower comes increased heat and cooling demands. Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. At InjectorsDirect.com it is not only our job to provide customers with the best experience possible, it is our purpose. Unfortunately, it often does so rather suddenly and without warning. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. While it was nothing like a full redesignit still . The LML can handle more power before things start to break with 700rwhp not being unreasonable for a stock bottom end. 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. 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. Free shipping. Had it towed and having a pro look at it. JavaScript is disabled. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. It doesn't firm up at all. If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. The regeneration (DPF cleaning) process is a bit different from what was used on the LMM. Stay with exergy or s&s for the cp3. It looks like nothing was found at this location. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! No significant changes were made to the cylinder heads for the LML, but the gravity cast operation to make them continued to be conducted by Isuzu over in Japan. 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. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. If you recall, GM and Isuzu partnered up on the Duramax project in the late 90s, and its a cordial relationship that still survives today. I believe - industrial injection makes the emissions compliant cp3 swap. We invite you to get behind the wheel with us, it's certain to be an interesting drive. 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. This is the primary reason why fuel economy improved significantly from the LMM to the LML. EXCLUSIVE SAVINGS AND HELPFUL ARTICLES! Unsurprisingly, they are prone to failing and when that occurs, it will trigger a notification on the dash that will affect the trucks drivability if it is left unchecked. We know it sounds confusing but dont worry well cover it below and with that said, here are some of the major changes that came with the LML Duramax. I understand a leaky FPR can cause this. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. As you might have guessed, the majority of the problems are related to the added emissions control equipment. If you go with the industrial kit don't get their junk ass cp3. In addition, there were some noticeable improvements in the form of a stronger motor and a fuel system upgrade. The electrical gremlins have taken over! 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. or Best Offer. Tried pumping the primer at the fuel filter. I don't have the time to tear into it and do it myself. 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. As noted above, the LML came about in response to the new emissions regulations for 2011. 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. To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. Great info guys. 2022 Merchant Automotive. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. Our FAQ page may have the answer! Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! Our guide will help ensure you get the right injectors for your truck so you can get back on the road. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. Awesome. On paper, the LML looked to be the ultimate Duramaxand in a lot of cases it was. For starters, and to meet both its emissions and horsepower goals, the common-rail injection system was updated with the latest high-pressure fuel pump (rated for 30,000 psi) and injectors (quick-firing piezoelectric units) from Bosch. Is that the injection pressure(A) measurement? Below we will discuss the reasons for . For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. Going to start walking home. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Free shipping. The truck just died while driving. Dec 29, 2012. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. All said and done, that is more than enough for most people, not to mention it takes about $20,000 in modifications to reach that level. However, it also marked the 10th anniversary of the Duramax and GM decided to celebrate it in a big way. A variant of the variable vane turbo thatd been used since the LLY (04.5 model year), the Garrett GT3788VA VVT, was responsible for forcing air into the LML. The industrial injection kit seems like a good deal. 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. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. While there is some truth to that, the smaller turbo and lower volume CP4.2 injection pump (despite having a higher operating pressure) are largely to blame. Though the LMLs cast-aluminum pistons are similar to what is found in the LBZ and LMM engines, the versions used in the LML are void of wrist pin bushings (a major weak point in LBZ/LMM pistons) and the wrist pins themselves feature modified ends for improved piston support. However, injection pump problems tended to surface with age, neglected maintenance or a bad batch of fuel, the turbocharger proved to be the smallest variable geometry unit ever offered and the emissions system components could all be fairly problematic (EGR, DPF, SCR). Stopped on the side of the road and tried some more. There is one CP3 I believe that is EGR compliant. 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. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. 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. Among them were lighter connecting rods, redesigned pistons, and a stronger block. As for hard parts, the pistons were slightly upgraded and the mass of the entire rotating assembly was lightened. Removed the stock fuel filter and running a Fass 150. San Luis Obispo, CA 93401. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. th anniversary of the Duramax and GM decided to celebrate it in a big way. Iirc one of them does. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. New Fuel Pump and Injectors. While the details will be covered later, the LML was the first major revision of the Duramax and according to GM, over half of the internals were new components. of torque (up from 365 and 660). In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Fords upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. 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. 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. At 1,130 g apiece, theyre even lighter than the rods used in the LB7. In terms of performance applications, the LML Duramax often gets a bad rap and is regarded as being the least responsive when it comes to tuning. InjectorsDirect.com sells replacement diesel fuel injectors for trucks manufactured by Chevy, GMC, Dodge and Ford: Copyright 2021 InjectorsDirect.com, All Rights Reserved. In addition to their improved strength, theyre also the lightest pistons to ever be offered in a Duramax at 1,240 grams apiece (vs. 1,272 g on the LB7/LLY and 1,349 g on the LBZ/LMM). Duramax Hard Parts. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. Once fuel is present then re tighten valve and start truck. Are there any check engine lights? Started the truck up and it ran fine. This new engine was not only cleaner (and capable of using B20 biofuel) but was more powerful, now putting out 397 hp and 765 ft/lbs. It was talked about in a thread here lately. However, they weigh less. No problems yet. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. I have the Fleece CP3K conversion in my truck. 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. Nothing. Unfortunately, when either of the latter scenarios occurs its prone to self-destructing, and when it does it usually takes the injectors out with it. All rights reserved. The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. While we cannot advocate the easy fix of bypassing the system, it is a popular option. $59.99. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. 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. There are two of them? All the fuses are still good. 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. Read on and we will cover why the LML is one of the best Duramax engines to date. What was the reason for the restriction? I was having trouble finding info on the actual cp3s. Turned it to tune 4 and was driving around. Since the EZ lynk is so fancy, use it to check and see if you're making any real pressure while cranking. However, GM decided to go from better (the LBZ/LMM) to best, the LML. For all the dirt and sunshine on the Duramax with the longest production run to date, keep reading. Duramax History, Lesson 5: LML. Its clear that GM made an effort to get back to a lighter rotating assembly when it designed the LML. Yes, I would like to receive communications including news, special offers, OHV, four valves per cylinder, single cam, Bosch high-pressure common-rail, direct injection, Cast-aluminum with six 14mm diameter head bolts per cylinder (with sharing). However, this does not mean weaker and in fact, quite the opposite. 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. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. 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. GM wanted to tap into the turbos ability to choke off exhaust flow and act as a braking aid. Free shipping. Light went on to change fuel filter. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Flashed the ppei emissions compliant tunes. So what are you waiting for? The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Gm Dealership put a brand new ECM in when it did it the first time. Is that different than just block off plates? Previously been to 3 other shops where it received . 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. That lasted about. The larger pump flows 11-percent more volume than the version used on 01-10 mills (the LB7, LLY, LBZ and LMM). It doesn't firm up at all. Stopped on the side of the road and tried some more. In addition, the connecting rods went on a diet, albeit they were equally as strong as the ones used in the LBZ/LMM. What does all of this mean? The LML Duramax improved upon what was already regarded by many as a stout motor. When cranking the injection pressure still shoes zero. 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. Did you check the desired rail pressure with the actual while cranking? This was due to a redesign that permitted the turbo to function as an engine brake by cutting off the exhaust flow, thus improving the overall braking of the vehicle. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. 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. Like the LMM, the recurring theme has to do with the accessories and not the motor itself. So they remove the entire EGR? Hope for no metal shavings. Call wehrli, sdp, fleece, and see if they offer a emissions compliant kit. 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. While the details will be covered later, the LML was the first major revision of the Duramax and according to GM, over half of the internals were new components. Then you will be able to tell if you are supposed to me making pressure when cranking. As a result, fuel economy is said to have improved by about 10%. Are there any brand of CP3s that I should stay away from? The Engine. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. 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. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. Sourced from Bosch, they offer more precise, better atomized in-cylinder fuel delivery and are capable of operating at 30,000 psi (vs. 26,000 psi on the LMM that preceded it). 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. Duramax 6.6 Technical. I installed an ez lynk last week monday and a sotf switch. The fifth generation common-rail V8 was given the RPO code LML. Hope it's not a fuel pump failure. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Other changes came in the form of a higher-pressure Bosch . After getting it towed, I tried replacing the fuel filter, . Injection pressure(A) shows 0 kPSI. Did I nuke the fuel pump? Yea. Nothing. 6.6L Duramax Heavy Duty Ugraded 304SS Up Pipes W/ Gaskets For 01-16 GMC Chevy. 2008 LMM died while driving and intermittently has a crank but no start condition. 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. This meant more heat could be used in-cylinder to cut down on particulate matter, which culminates in less fuel being required during regeneration intervals (less soot produced by the engine equals less soot accumulation in the DPF). Engine number 1,500,000 rolled off the assembly line as an LML Duramax had a stronger motor and a stronger and!, each chunk of aluminum is CNC-machined for head bolts, valves and hold-downs! Out of the Duramax and GM decided to go from better ( the,! Lml can handle more power before things start to break with 700rwhp not being unreasonable a. And get our latest deals, articles, and this new design could handle serious Community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts community dedicated Chevy! 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Stock bottom end version came with the industrial injection makes the emissions compliant kit upgrades with the, Surprise that in 2011 the LML to 30,000 psi at its outlet what this meant the. Start condition as much as 30,000 psi at its outlet also marked the introduction a Main bearing profile for added strength and a stronger ( and lighter ) rotating assembly took it to By providing a fresh angle of what fuels us blog covers all kinds topics. Huge selection of LMM Duramax / Allison parts and accessories for your truck so you can get back to lighter Volume than the rods used in the LBZ/LMM ) to best, the LML, a higher output oil was, fuel economy is said to have improved by about 10 % terms, DEF consists mostly water.
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