How to prevent cp4 failure

7L Super Duty trucks, as the layout of the lines have evolved somewhat on The Cause of the CP4 Failures: Lack of Lubricity in the Fuel. Yes it sounds like a huge number BUT that would be like EVERY PSD. You may hear a loud whining sound coming from your engine’s gas tank when the CP4 or high-pressure fuel pump of the 6. The wife was driving it and got the check engine light followed by loss of power and then complete engine shutdown. Replacing the cp4, fuel filter and flushing the fuel lines from the tank and cleaning the fuel tank. 2 doesn’t possess the same track-record for reliability. 7L Super Duty trucks, as the layout of the lines have evolved somewhat on The primary cause of high-pressure fuel pump failure is lack of lubrication. It's unfortunate that this revolutionary injection pump system has a high failure rate. I've heard very few stories of failures on 2017+ super duties. Apr 19, 2019 · Bought the truck Jan 2014 with 60,000 miles on it. 7 Powerstroke Disaster Prevention Kit + ExofilterThe “Disaster Prevention Kit,” it does exactly what it implies; it prevents the disasters of a CP4 pump failure from destroying the rest of a very expensive high-pressure fuel system. 7L Powerstroke protected from potential CP4 pump failure by installing the S&S Diesel CP4-6. Dec 9, 2020 · 5 posts · Joined 2019. This kit can help to increase the fuel pressure and flow to the engine, reducing the risk of failure. 1. Although the CP4 has a limited work life, you can do a few things to prolong it a Oct 15, 2023 · Tips On How To Prevent CP4 Failure . Mar 6, 2024 · The CP4 has been documented to fail mostly in cases of 100,000 miles in the USA. Apr 13, 2023 · For anyone unfamiliar with what can happen inside a factory Bosch CP4. 1. 7L Powerstroke. Feb 22, 2024 · The best disaster prevention kit for 2011-14 models is this one here. Metal Shavings in the Fuel Filter. It did require some eyeballing because there's no easy way to attach the wheel to the engine. FordDoctor. Fun Fact: this CP4 failure is such a common occurrence that usually happens right around the 100,000 mile mark, that there is actually a class action lawsuit over the very issue of Bosch CP4 pumps failing. Sent from my iPhone using Tapatalk. Aug 11, 2021 · The Power Stroke, Cummins, and Duramax Diesels all run the CP4 high pressure pump (in different generations), and when they fail it will cost you anywhere fr Mar 12, 2021 · The failure rate must be quite low, but the cost is easily >$10K if it does go. Filters on the dispenser is down to 2 micron (overkill) and no water. Only special tool required is a timing wheel as pictured. They are a PITA to work on and you end up replacing most everything in the downstream fuel system. 2 failure is less common on the 6. ee/fly Oct 13, 2023 · The Alleged Defects of the Bosch CP4 Pump. com. The complete new system that was put on should have had a 1 year warranty. #1. The new Gen2. The pump was changed/updated (still CP4) and there have been very few problems. Debris created by cam erosion within the pump eventually passes into the injectors and then is recirculated throughout the fuel system! As the engine runs, more and more damage occur until the lines, regulator, and injectors are completely and totally ruined. Like many of you, I've become quite concerned with the reliability of the CP4 in our trucks. 1) and 2-pluger (CP4. - So below we have the cp4 bypass kit functional map. 7L Ford Powerstroke F-350 Super Duty Models. Oct 6, 2021 · 2. 2 is smaller in volume then the CP3 they time it to try and maximize pressure whenever an injector fires to make up for the lack of volume we Jan 4, 2024 · 6. 1 Gen2. Sometimes the fuel pump makes such noises when you are out of fuel or have dirty contaminated fuel mixture in your gas tank. Of course, I would love more HP, but at this Mar 16, 2023 · Installing an Exergy Fuel metering valve into a 2015 chevy 2500hd duramax diesel LML. The No Limit Fabrication CP4 Disaster Prevention Bypass Kit is a must-have product for all 2020-2024 6. 7 Powerstroke CP4 Failure Symptoms. But it does prevent the pump debris from circulating through the entire fuel system. Ultra low sulfur fuel doesn't have a lot of lubricity in it anyway, so any small amount of fuel contamination can cause the failure. Powerstroke, Duramax, VW. Now the truck is over 100,000 miles. The issue with the CP4 pump comes down to material durability. The CP4s are all the same pump. It came to the US market in the 2011 model year used by the North American OEMs. Although the CP4 has a limited work life, you can do a few things to prolong it a little bit. What kills the motor in most CP4 failure is the shrapnel reaching the injectors, fuel rails etc. Initial anal Dec 24, 2020 · An aftermarket lift pump (i. 3mm stroker pump that displaces 38-percent more fuel than stock. By replacing the unstable CP4 pump with a much more reliable 6. Not just any low-pressure fuel supply pump, Ford makes sure 55 to 65 psi is being sent Nov 1, 2015 · Nov 1, 2015. You can remove the clogging of fuel filters and injectors. Maintaining the performance of the fuel filter is necessary to prevent pump failure. 7L Cummins CP4 fuel pump in my 2020 RAM 2500 tore itself up, sending the shrapnel everywhere. This is a 2011 2500HD wi May 23, 2024 · RCD Performance offers three versions of its CPX for the 6. But the check engine lights keeps coming on of off and reads Reduced engine power. If the Jun 24, 2016 · Kennedy. 1 and Aug 11, 2021 · Failed at 40k miles. If you still get water in your fuel, it will still take the pump out. A two-lobed camshaft drives the pistons (sometimes referred to as buckets), with each piston being actuated twice per crankshaft revolution for a total of four compression strokes. Won't be long before a class action pops up and Old Henry has to make things right for customers on this pump debacle. This one is specific to the LML code Duramax produced between ’11-’16, which used the Bosch CP4. From what I can tell, the engine is in great working condition and we have always followed good maintenance schedules for oil and fuel filter changes. It is however good reason to add extra protection to the fuel system as in lift pump Jul 2, 2020 · Replaced the entire fuel system in fact. 2 alive. Nov 18, 2022 · Above anything else, the CP4 has a tendency to fail around the 100,000 mile mark at a greater rate than normal. Nov 23, 2021 · Unfortunately, while this can help limit the damage caused by a failing CP4. Again, these kits won’t keep your CP4 fuel filter from failing. The kit includes a CP3 high volume/pressure oil pump, an upgraded Fuel Control Module (FCM), and a fuel pressure sensor relocation harness. Any engineer will tell you that as temperatures go up, lubrication is even more important to keep metal parts from scuffing. So, a knocking sound is also a symptom of pump failure. 7 Powerstroke fails. This thread is an effort to condense the numerous CP4 failure/success posts into one format that shows hard data. So I programmed a truck this weekend for a good friends dad. AirDog or FASS) will help prevent a cp4 failure by also eliminating air bubbles feeding the HPFP. This was with 9100 miles on the truck. I personally made the decision to add the DPK now, only 35K miles as I want to avoid breaking down away from home. So, on August 29, 2021, the 5th Gen 6. 2 high-pressure fuel pump (vs. So far, I have found the failure rate is around 7% for CP4 pumps by that logic the nonfailure rate is 93%. The high-pressure fuel then leaves the pump and travels through your fuel system towards your injectors. However, if the CP4 pump fails, it can have severe consequences for the engine’s performance and longevity. By replacing the unstable CP4 pump with a much more reliable Mar 19, 2018 · When the 2nd gen 6. Jan 30, 2018 · My issue is the fact that the First failure wants my fault and caused it to fail at 91,000 miles. 2 Bypass Kit for the 2015-2019 6. DzbRacing Discussion starter. This re-routing prevents metal debris from contaminating the rest of the high-pressure system if/when a failure occurs. More like some low balled figure. Today’s Ultra-Low Sulfur Diesel (ULSD) does not contain the lubricity needed to fully protect our vehicles. I am waiting on a quote from the dealer to see what Sep 7, 2021 · There are lots of things it could be but in this video, we’ll find out what it takes to diagnose the CP4 in the event of a failure. Soon learned about the potential failure of the CP4. Jan 1, 2024 · I was finally able to tear into it this past weekend and sure enough, CP4 failure. You’ll need a different kit for the 2020 and 2021 6. ORG member having a Ford 6. , upwards of 7%, when compared to 1% Feb 10, 2020 · SheeB said: I have 250K kms on my factory original CP4, and no issues. They've been blaming "contamination" for years now and customers are getting smarter by the minute. This keeps any potential metal debris from a high pressure fuel pump failure out of the rest of the system entirely. ly/stage_two_kit POWERSTROKE STAGE ONE: https://bit. It will fail. Eliminating the air in the fuel feed provides more Sep 24, 2023 · The CP4 is a high-pressure fuel pump found on American trucks such as the RAM 6. Other forums have disclosed that the failure rate is within 5-7%, specifically for LML Duramax engines. 2 Failure: Install A Lift Pump. I bought a Fleece 50 state conversion CP3, S&S TorqueMaster Injectors (10% over), new fuel lines and rails, and a FASS Titanium Signature 100gph. . Knocking Sound. 3. Oct 26, 2021 · A radial piston pump, the Bosch CP4. 7 power stroke because I had to had to have my fuel system replaced for being contaminated. You can clean the filter and prevent the Aug 19, 2023 · A: CP4 failure refers to the malfunction or failure of the CP4 high-pressure fuel pump in a 6. 7L Disaster CP4 Prevention and Bypass Kit is designed to prevent catastrophic fuel system failures in 2007. Using 2011-2019 model years that would be only 200k trucks with CP4 issues. Instead of designing or choosing a new pump fit for American diesel fuel, Ford decided instead to use the same pump – Bosch’s CP4 fuel injection pump. But it can be the difference between spending $2,000 to replace it, or $10,000 to replace your entire fuel delivery system. Then figure say 10% have the CP4 issue regardless of owner induced or just a HPFP failure. As it begins to fail, the CP4 starts shedding metal shavings and metal contaminants into the fuel. So I ordered it and www. The CP4 can be categorized into two: the CP4. Oct 28, 2019 · The fuel pump that comes standard in 2011-2017 Ford “Super Duty” 6. Common Problems: The CP4 Time Bomb. The CP4 is weak garbage. Popular fixes involve boosting the fuel pressure with an additional pump, or replacing the CP4 with the more reliable, but less fuel efficient, CP3 pump. Sorry I don't have hard data for you. But it’s not considered to be the main cause. #1 · Sep 23, 2020. the predecessor CP3 found on LB7, LLY, LBZ and LMM engines). Well yeah out of 6 and having one CP4 fail is still higher than the typical known failure rate. This is where the S&S Diesel Motorsport CP4 Disaster Prevention (fuel pump bypass) kit comes into play. In this video we break down the CP4 fuel pump!Thanks for watching!Contact - https://linktr. 7L Power Stroke: a stock replacement pump, which features the same displacement the ’15-’19 CP4. CP4 Failure. Rest of the year I’m going to use EDT and LX4. Unfortunately, the CP4 has long been plagued by failures, warranty claims, and expensive repair bills, even leading to a class-action Feb 20, 2023 · Luckily, there is a way to keep a disaster from occurring to your diesel’s fuel system. Apr 29, 2018 · If you own a duramax with the CP4 high pressure fuel pump it might be worth looking into a converting it back to a CP3 before yours goes and contaminates your whole fuel system. :ford: 2015 Tuxedo Black F-250 Platinum (FX4) Currently running Chevron Delo 400 LE 15W-40 (CJ-4) oil and CQ Blue 84151 (Clarcor The problem with the CP4 pump is so well known that several companies sell expensive kits that cost up to $3,600 (before labor costs) to try to prevent the problem. 7 Powerstroke engine. Cold weather I am using winter anti gel and LX4. 7 came out for the 15MY the CP4 issues were reduced considerably. Replacing the HPFP is a good idea IMO, and I honestly found that to be the easiest part of the job. S&S customers who already own a Gen2 CP4 Disaster Prevention Kit can purchase the Gen2. Gather all the people relevant for making the decision in the room, or representatives of the stakeholders if there are too many to have in a group. A good number is 6, and avoid Oct 1, 2021 · Strategy for Receiving 2020 RAM 2500 Back from Dealership After CP4 Failure. The Bosch CP4 fuel pump has an unusually high failure rate in the U. #3 · Jun 24, 2016. 7L Ford Powerstroke Bosch CP4. Feb 15, 2024 · A 6. Prevent Failure. I guess I kind of got off track. Had the mprop out about 6k miles ago while installing the SPE disaster prevention kit, the screen was perfectly clean. Feb 5, 2021 · MikeXM said: If you are more after protecting your CP4, go with LX4 instead of EDT. #1 · Dec 9, 2020. The bottom line. Each of Dec 27, 2023 · The gig us up on Ford. 7F-BP-G2. But it’s also important to know. 7L Power Stroke Diesel - 6. Aug 10, 2018 · The Exergy Performance Fuel System Savers offers peace of mind to those who own an LML who are not interested in doing a CP3 Conversion. Nov 1, 2021 · This is believed to be the dominant reason CP4. Has been at a GM dealer for 10 days and they finally sent me the codes they charged me $128 to pull from the truck. When one of the lifter buckets rotates in its bore (usually due to air being present), the pressed-in roller at the bottom of it rides perpendicular to cam lobe instead of parallel with it. I known air dog and ect will help as well but my main point is how to save it in stock form and how some p May 25, 2023 · It is essential to take precautionary steps to prevent 6. This will prevent CP3 from dying. 1 return filter head uses the same quick connect fittings and mounting hardware as the previous Gen2 filter, which allows for an easy retrofit. The kit comes with everything you need. I did a quick google search and really didn't find what I was looking for. Jason Wehrli explain In short the answer is no, the only way to prevent a CP4 failure is to do a CP3 conversion, there are many different kits on the market. 7L Powerstroke by cleaning and maintaining the car engine. Ultra-Low Sulfur Diesel (#2 Diesel) = Ultra-Low Lubricity Diesel. 2 (making the repairs less expensive), it can’t keep the CP4. Jun 29, 2022 · A white paper on the CP4 from Green Diesel Engineering The CP4 Bosch fuel pump has been in the field since 2008 model year with European OEMs in both 1-plunger (CP4. 7 powerstroke fuel system failure is a very common thing. It has been at the dealership for 1 month, and they said they had to wait on parts. #4 · Oct 23, 2021. 2 high-pressure fuel pump, this is what the aftermath of a typical failure looks like. Apr 20, 2017 · Cp4 has a Gerotor same as cp3 to supply piston side of the pump. Jun 29, 2020 · See All 11 Photos. 7L Cummins trucks. Thankfully I installed the exergy fuel metering valve re May 15, 2023 · SPE 6. May 11, 2023 · These mods are for slight clearance problems and don’t involve much more than using a Dremel tool or die grinder. It is also a symptom of a failing CP3 pump. While supplying high-pressure fuel is an injection pump's job, the CP4 does so with a high probability of failing (typically around the 100,000-mile mark) and leaving owners Apr 11, 2023 · If you own a diesel truck with the Bosch CP4 fuel pump here are five different ways to prevent catastrophic failure. I've heard $9k and I've heard $12k warranty dollars. My 15 GMC 3500 broke down half way across the US at 124,000 miles. 00 USD. Keep the pump cool. Despite this, the pump is well cherished by a lot of diesel engine enthusiasts. On mine I had the shop put in the Exergy fuel pressure regulator to catch a CP4 failure. Mar 2, 2020 · I am the original owner of a 2012 3500HD and to help prevent a CP4 failure I installed a Fass Titanium series lift pump about a year or so ago and have been using Opti-Lube in my fuel. 11 posts · Joined 2021. Even though this high-pressure injection pump has a lot to offer, they have a lot Jun 4, 2018 · This is the first of two back-to-back failures we recently saw on the 2011-2017 6. Over the years there have been many failures of this pump due to I’ll also provide you with a few suggestions to prevent your CP4 fuel pump from wearing out earlier than expected. I'm sure some here know all about it but I didn't even The CP4. Sure water in the fuel will very quickly destroy a HPFP. It's not significant enough to worry about in my opinion. It’s always frustrating to finally get your hands on a brand-new truck (or at least, new to you) and find out there’s something wrong with it. 1-FHU) to update their kit to the Gen2. 1 spec for $120. Right now, I am $2000. Jun 10, 2023 · One of the most effective ways to prevent CP4 failure is to install a fuel system upgrade kit. Dec 12, 2021 · CP4 Pump Fuel Additives. 7L diesel with the same CP4 issue. Sep 4, 2023 · The 6. We all know how much injectors love metal going Feb 22, 2024 · The best disaster prevention kit for 2011-14 models is this one here. I used Stanadyne Lube Formula for awhile, then in 2017 switched to Opti-Lube XPD, and recently I have been running only Opti-lube XL because it is the best for lubrication. I use a lubricant additive, but I'm not sure if it's really any help. Nov 24, 2018 · 2. Apr 18, 2022 · Finally, its time we start our diesel truck build! This is a 2011 Chevy Silverado 2500HD LML Duramax 6. I have my own diesel tank on the farm, fuel is always fresh, always add Optilube before tank refilling. The older the vehicle becomes the less value it has and the repair cost goes up too. If you hear air sucking into your tank when you open the cap your vent is probably plugged. 00 into a DEF problem (trying to keep the truck "bone stock") I started researching the issue. 7 Powerstroke owners. 5-2018 Dodge 6. a metal plate installs near the metering valve resulting in breaking lube fuel going back to the tank instead of the injectors. Rise In Temperature & Rattling Noises. Not just any low-pressure fuel supply pump, Ford makes sure 55 to 65 psi is being sent Oct 22, 2021 · Pull the CP4 meter screen. 2) configurations. 7 Powerstroke is finding metal bits and pieces in the fuel filter. 2 did, a 10-percent over pump for aggressively tuned trucks, and a 10. The lift pump changes the pressures. Also, you can clean the fuel flow passages with cleaners. Jul 18, 2018 · Figured I would show first hand what to expect when you have a CP4 failure and what is actually going on in this pump when it fails. 7 Power Stroke, is at it again with a much-improved second generation kit. Water in the fuel would be probably the biggest cause. FASS, AirDog and Fuelab are the big names in town here. Another thing I read is to avoid running to empty (rational behind this was more fuel in the tank == cooler fuel). However the added filtration of a fass or similar system is more likely to catch water, the number one cause of failure. Now in my opinion, the quality of fuel plays a major part in the failure. 2 from failing. When the CP4 pump fails, it can lead to various issues such as low fuel pressure, hard starting, rough idle, loss of power, and potential Sep 1, 2021 · The CP4 is a high-pressure fuel pump, or injection pump, that debuted in 2011 in the Ford Powerstroke and GM Duramax engines. The good news is that failure is not very common. Sep 23, 2020 · 3 posts · Joined 2020. 7L Powerstroke, and for those years you’ll want to make sure to buy part #7031190. We prefer the S&S 50 State Legal kit because it does include everything needed to maintain the factory emissions equipment and it will pass smog. 2 is a two piston dual cam injection pump versus the CP3 is a three piston single cam pump so with the dual cam we run the pump at twice the speed of the CP3 but only run 2 pistons and since CP4. 4. Some sources state that the failure rate of the CP4 is anywhere from 5% to 7%. So, better to inspect to verify the issue. Ignoring the signs of CP4 failure can lead to further damage to other engine components and even complete engine failure. 2 high pressure injection pump. 7Ls from failing. That would be 25k trucks having the problem. They won’t warrant it and they are saying the reason is due to. 2), each with its own piston assembly, spring, plunger, and head. Apr 28, 2023 · I have no idea if Diesel Kleen will address the issues with the CP4 pump, but it might be worth looking at and it is widely available at retail locations. e. 2023 Gladiator Rubicon - White, Auto, Hard Top, Steel Front Bumper, Trailer Tow Pkg, LED Light Group, Cold Weather Group, Auxiliary Switches, Bedliner, Off-Road Camera, Safety Group Oct 27, 2018 · The CP4 pump fails when it doesn't get lubrication, and all of the pump's lube is from the fuel. They make the new S&S Gen2 CP4. 7 Powerstroke CP4 injection pump, designed to supply a constant high-pressure fuel flow for smooth engine operation, has become a source of frustration for many 6. not just any additive but the lubricant specific ones. 7L and Ford 6. 1 CP4 Disaster Prevention Bypass Kit from XDP. You the owner eat what it cost you over that amount. The CP4 pump is designed to deliver fuel into the connected rail system under immense pressure. The CP4 pump is lubricated by diesel fuel, if you don’t have a constant supply of good, clean, fuel to your pump you’re causing damage every day that you drive it. First mod on the list is the FASS 165 lift Keep the fuel system in your Ford 6. ly/STAGE_12017 Ford F250 6. So that doesn’t speak too highly of CP4 reliability. 2004 Ford F350 King Ranch Crewcab, 6. Everything new and the truck drives great no problems. 1 Filter Head Upgrade (CP4-6. 9310 posts · Joined 2003. For Eric’s 2014 Super Duty, we used P/N: CP4-6. May 8, 2022 · One of my trucks is a 2011 F350 6. These are five cheap & easy ways to prol Oct 2, 2019 · The CP4 pump has a tendency to tear itself apart from the inside for lack of technical terms. S. Now the DPK will NOT prevent CP4 failure, but most likely will allow you to limp home. Oct 27, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jan 5, 2021 · POWERSTROKE STAGE TWO KITS HERE: https://bit. The more fuel in the tank, the cooler the fuel will be, and the cooler the CP4 fuel pump will run. CP4 failure is a common issue, but many owners could have prevented it if they had recognized the initial signs and symptoms. This includes changing or replacing fuel filters every 10-15,000 miles and installing an EPA Compliant CP4 Disaster Kit to protect your fuel injectors, lines & rails from contamination. LX4 in both cases is what protect the CP4. 0, auto, 4x4. Aug 1, 2023 · I doubt GM will be forced to pay each owner what it cost to replace a CP4 that failed. Ford has used the CP4 as well with a little better results but they also used it in tandem with a lift pump. Perhaps one of the most common symptoms of failure in a CP4 on a 6. We’ll show you the three Jan 22, 2020 · The CP4 is not as reliable or durable a pump as the CP3 that was used up through 2010. Feb 12, 2020 · In short the answer is no, the only way to prevent a CP4 failure is to do a CP3 conversion, there are many different kits on the market. Unfortunately, the CP4 pump is not compatible with Video shows modification on a CP4 HP pump which prevents injector and system fatal failure in case HP pump fails. Lift Pump. The CP4 was an updated model to the incredibly reliable and well-regarded CP3 pump. This kit is specifically designed to prevent the failure of the CP4 fuel injection pump, which is a known issue in Ford diesel engines. 7 Powerstroke CP4 disaster preven The most common reasons attributed to the failure of the CP4 pump are: Tips On How To Prevent CP4 Failure . A lift pump is a must if you have a workhorse vehicle or plan to tune it. (MPROP) If it’s contaminated then you will have the answer. Detecting CP4 failure early on is crucial because it allows for prompt action to be taken. So we all know the CP4 has problems , and some of the best techs say adding things like FPPF or Stanadyne fuel lubricant additives and changing your filters often will cut your chances of a disaster way down. These alleged defects have raised concerns among car enthusiasts and experts alike. Even though this high-pressure injection pump has a lot to offer, they have a lot You can prevent the failure of CP4 on a 6. dieselplace. We got to talking about cp4 failures and what all they entail after. warrendiesel. 5. The CP4 was an upgrade of the CP3 pump that had been in the market for close to 10 years. Direct Fit Replacement Kit. Installing a lift pump is recommended in all big diesel engines with high-pressure fuel pumps. Dec 18, 2020 · S&S Diesel Motorsport’s “Disaster Prevention Kit” doesn’t keep the Bosch CP4 in Ford Power Stroke 6. While we generally have an overly litigious society, these Bosch CP4 fuel pump lawsuits have legs with many owners reporting upwards of $10k in damages. This valve will keep the metal in the low side fuel system only. It’s even more frustrating to learn that not only are you not alone in your suffering, but that it’s a common problem to your vehicle. 7L Power Stroke than it is on the LML Duramax: the electric lift pump that’s part of the all-in-one diesel fuel conditioni­ng module (primary filter, drain valve, and pump). While this is a very simple concept up until now all the www. S&S Diesel Motorsport, creator of the original Disaster Prevention Kit for the 6. 6L Diesel. The CP4 pump is responsible for delivering fuel at high pressures to the fuel injectors. 7L with 220,000 miles and it just had a CP4 failure and we are now facing a $10,500 repair from the Dealer. 7L diesel engine trucks was originally built for vehicles in Europe. Prevent CP4. The failure is due to the lack of lubricity in the ULSD here in the states since the pump was tested overseas where the fuel isn't regulated like it is here. An aftermarket lift pump system is the most affordable way to keep the CP4. The fuel filter design was changed for 17MY and seems to be solid as far as keeping water out. Another cause is water or contaminants in your fuel, again this goes back to changing your fuel Aug 6, 2021 · All this talk about replacing the CP4 with a CP3 because of a catastrophic failure of the CP4, is scaring the heck out of me. The Bosch CP4 pump, despite its advantages, has faced significant criticism due to reported defects that have caused pump failure and severe repercussions for vehicle owners. Air filters should be cleaned or replaced if they are dirty. 2 consists of two high-pressure cylinders (hence the “2” in CP4. As your fuel pump suffers wear and tear due to high Nov 9, 2017 · The common denominator that I have seen here and on other PSD forums is water in the fuel causing eventual catastrophic failure of the fuel system with Ford subsequently denying the warranty due to water in the fuel. Basically want to do replace the cp4 before it takes a crap and takes out the injectors since the truck has 125k on it and Oct 5, 2014 · CP4 Reliability Poll. D. Whatever. Additionally, if no factory lift pump is installed on the vehicle Feb 1, 2018 · Excellent Video Showing LML CP4 failure must watch if you own 11-16 Duramax! Video thanks to our friends at Duramax tuner always providing their knowledge and insight, if you haven't already go check out their podcasts and other videos tons of useful information and its all free! Also take a look at our video tearing down a blown CP4 pump in house. A knocking sound is heard when the CP3 pump fails. Many guys get many trouble free miles from the CP4, however, many have had premature failures. My final step is to replace my FPR1 with the Exergy System Saver in case of a failure. Try NOT to continually run the fuel tank near to empty before filling it. I'll attach pictures. It's true that EDT contains some LX4, but not to the level of a full dose of LX4. Unlike the ultra-durable CP3 that came before it, the CP4. Sold 08 Sierra Dually 553k miles. Please select one of the appropriate responses listed for your OWN vehicle only! Just my opinion on how to prolong your cp4 system. They're not kidding about catastrophic failure. 2012 F350 SRW CCLB Lariat FX4 Stock 341K Miles. Join us for a look at the work the company performs Jul 11, 2019 · Step 1: Gather. Blue or White Smoke at Idle in Cold Weather. Apr 8, 2021 · But the DPK would save your fuel system. A lift pump will do nothing to help the cp4 from failing. This is simple and effective solution that Nov 5, 2018 · Not bad. I had a cp4 disaster bypass kit installed in my 2017 f250 6. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 14, 2023 · Another option to prevent failure is using an additive like LX4 Lubricity Extreme to help increase lubrication and prevent the metal shavings from forming. 7 fuel system failure CP4 disaster prevention kit design flaw. The FCM will raise the factory’s low fuel pressure warning Apr 8, 2022 · The CP4 has been documented to fail mostly in cases of 100,000 miles in the USA. Using a fuel additive like Diesel Kleen is supposed to help. From my research, engineers who have examined failed cp4s believe that low lubricity in US diesel causes failure of this pump. xj of tm zz az xe hv cp yp cz