It's as close to magic as a diesel engine gets! Contamination from water and debris have an abrasive effect on the orifice, grinding the surface, which quickly and inevitably leads to a poor seal between the valve and the check ball. Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more! 5 Fatal Flaws of the Duramaxand How to Fix Them, Does Your Overland Rig need Dual Batteries? Motorsport Diesel 1.98K subscribers 47K views 3 years ago Shane discusses how to easily tell if your CP3 is bad and the proper way to. A forum community dedicated to all things Cummins Diesel! You will need to monitor the rail pressure to be sure that during cranking you have over 4000 PSI. The company's new 6.6L Duramax LML CP3 conversion kit bolts directly in, features a pump with the correct drive gear, and doesn't require tuning. Originally founded for owners and enthusiasts of Cummins powered Dodge pickups, the Cummins Forum has expanded to include ALL Cummins Engine applications! It's very common knowledge that engines rely on fluids to operate. If you own any common rail injected diesel long enough, there is a very high likelihood that youll experience an FCA issue at some point in time. 07 5.9,160K fass, 50+ Exergy, studs, air filter, cat delete, high flow muffler, intake horn, Smarty SSR. The FCA is controlled directly by the engine control module, and its a simple solenoid design that uses a small amount of current to open or close the valve. Every common rail diesel uses a high-pressure injection pump, and over the last two decades, there have been several different pumps used from various manufacturers. The CP3 fuel pump has a longer lifespan than the CP4 but has some minor problems. Be it common rail Cummins problems, fuel control actuator issues, 6.7 low fuel rail pressure codes, or the like, the following should help you with common rail diesel troubleshooting. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. There are 08 most common symptoms of Duramax CP3 pump failure, including low fuel pressure, no start, knocking sound, black smoke, fuel injector issue, longer crank time, etc. Also been checking oil and it's not moving up or down that I can tell. Originally founded for owners and enthusiasts of Cummins powered Dodge pickups, the Cummins Forum has expanded to include ALL Cummins Engine applications! My CP3 rattles in a pattern not constant. Whether you have a CP3 or CP4 injection pump on your Cummins, the replacement steps are pretty much the same, except on a CP4, the FCA may be called a regulator, and its only held in place with two screws instead of three. Also, running a fuel additive which increases lubricity like F-Bomb is good practice for a long-lasting fuel system, but because the FCA does have moving parts inside, the extra lubrication provided by F-Bomb could help prolong its life. Usually, you wont be left stranded on the side of the road with a no-start condition, but it is possible. The FCA is an electrical part controlled by the PCM, and there are several other components that all need to work in concert with one another to correctly regulate fuel pressure, and when you unplug the connector, you may be overlooking a potential problem with the pins inside the connector, a broken wire, a short to ground, a short to voltage, or even an issue with the computer itself. The 4 Most Common Cummins 5.9L Engine Problems - Diesel IQ I would lean towards my cp3 acting up and causing a little smoke(not chugging white smoke) on first morning initial startup along with my rattle at 1600-2000 rpm, fuel mileage. To eliminate the problem, you need to replace the CP3 pump. You can, however, fix minor issues like a leak on your own. But how do you know when it's time? But no pressure out of the pump leads back to the pump. I have an 04.5 5.9L and recently got the engine and truck rebuilt. Your email address will not be published. Our ASE certified technicians are ready to help you find what you need! Thinking about replacing the high-pressure pump or common rail injectors on your Cummins engine? 3 REASONS NOT TO REBUILD. hbspt.cta._relativeUrls=true;hbspt.cta.load(8307329, '699b1b0f-1925-4565-97c0-8ad2a13faa19', {"useNewLoader":"true","region":"na1"}); If you're looking for quieter performance, improved fuel economy, and lower emissions for your Cummins engine, look no further than these fuel system components from Bosch. As a result of the CP4 fuel pumps inherent fault, GM has been sued. VIN Lookup https://www.cumminsforum.com/threads/newbies-guide-to-your-new-to-you-truck.1909713/page-11#post-29385439 Service Manuals (PM me if the link is not working, use Adobe to open them) Updated Links A forum community dedicated to all things Cummins Diesel! It can cause a hard start if the CP3 pump does not provide enough pressure during the cranking process. What are the symptoms of a bad CP3 pump on a 2007 Dodge 5.9 3. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The first CP3 fuel pump was introduced along with the Duramax diesel engine in 2001. All these 08 problems are minor, So you dont have to worry about them. From the HP pump the fuel flows to the rail where it accumulates prior to flowing to the injectors. As Todd Emmert, machine shop manager for Scheid Diesel, points out, the problem usually boils down to three key words: Fuel, fuel and fuel. Hes not kidding here. The gear-driven injection pump basically feeds diesel at high pressure into the fuel system's common rail and injectors, which are timed to fire on a cylinder's compression stroke, right before a piston reaches top dead center. Making The Cummins Great AgainWith A Factory CP3 Fuel Pump Swap VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The polygon rotates elliptically to pressurize fuel. This is a common symptom of a bad CP3 pump. I just got home from work and looked under the truck at the bottom of the cp3 again and noticed the same wet spot. if you are getting the large fuel leak code, you can also check your fuel filter housing before you by and replace the pump. Get the latest diesel news, tech tips, new parts, vehicle reviews and more. It is designed for better performance and to handle more horsepower than its predecessor. Then the injector receives high-pressure fuel from the rail and injects atomized fuel into the combustion chamber as requested by the PCM. 7 Common Cummins Lift Pump Failure Symptoms You Shouldn't Avoid Once you see the injection pump, the FCA will be sitting right on top ready to be replaced. A failing fuel pump is the most common reason for a hard start. hbspt.cta._relativeUrls=true;hbspt.cta.load(8307329, '61c7134f-342c-4b98-807e-f4ae06785511', {"useNewLoader":"true","region":"na1"}); Highway and Heavy Parts is in no way associated, sponsored, or affiliated with any OEM manufacturer. The Fora platform includes forum software by XenForo. From 2001 to 2010, the Duramax V8 used a Bosch CP3 injection pump, and from 2011 to 2016, it got the updated Bosch CP4. It started having a pretty significant "stumble" or "miss" mainly in the higher RPM range. If you want to see the first compression ignition engine built by Rudolph Diesel, you have to go to Munich, Germany. Scheid prefers Stanadynes performance and lubricity formulas, partly because this company makes pumps and knows how they function and can wear out. This pump takes the fuel at supply pressure and boosts it to pressures between 80 and 180 PSI depending on what is required. All Rights Reserved. What are the common causes of a bad CP3 pump on a 2007 Dodge 5.9 5. The smoke may not be visible if the trucks are equipped with DPF (Diesel Particular Filters). Daniel Defense firearms, parts and accessories. Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more! One small and relatively inexpensive part that can cause a big headache on a common rail diesel is the valve that controls fuel flow into the injection pump. I've narrowed down and eliminated a lot of possible problems. Common rail injected diesels have been around for over 20 years now, and the use of high-pressure direct injection allows the latest generation of diesel engines to run cleaner and produce more power than ever. In the valve assembly, fuel passes through a tiny orifice at very high pressures. Like a lot of electrical components, there will be symptoms of a failing FCA to let you know something is wrong. On, Finding parts for your truck can be hard because of an endless list of factors including company trustworthiness, price, dependability, and much more. If it doesn't work, then this isn't the cause of your knock sound. This forces the CP3 to put max output on the fuel rail. The most common pump is the Bosch CP3, but a Bosch CP4 was also used, and the oddball pumps were the Siemens K16 and Denso HP4 (6.4 Powerstroke and L5P Duramax respectively). Aside from debris and particulates, Theres too much emulsified water in it.. Note that space doesnt permit covering every possible fault code on an OBD scanner, or an extensive list of SAE diagnostic procedures, as that would require a massive manual. So I believe my cp3 is tired? Diesel engines need fuel (Number 2, "red," etc. Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy. An injector connector tube that is poor quality or unsuitable. How long does a Duramax CP3 last? Also, modern common-rail diesel injectors can fire two or three times per engine cycle, doubling the wear on the injector compared to diesels of the pasthence the need for more conscientious maintenance. Are there any symptoms for the CP4 failure? - Chevy and GMC Duramax In 1981 he then received his Alberta Journeyman Heavy Duty Mechanic Certificate and Interprovincial Red Seal. Below, well revisit why the CP4.2 fails so often, how catastrophic its failure can be and touch on why Ram went back to old reliable (the CP3). While the various oils, water, and fuels are referred to as a powerplant's "life bloods," the latter liquiddiesel, for our purposesranks highest among all of them. Its a critical component, since common rail systems have much higher injection pressures, and tolerances are measured out to five-place decimals. I think one thread mentioned the symptom that I am having but it was kinda vague. CP3 Pump Failure Symptoms And Common Rail Injector Problems Tom Zelinka has been an Alberta Journeyman Automotive Mechanic and Interprovincial Red Seal since 1978. Lots of smart guys here that have seen a lot. It is commonly called a high-pressure injection pump since it creates and controls high-pressure fuel. Backed by a 1-Year Unlimited Mileage Warranty and the industry's leading service reps. Highway & Heavy Parts has the fuel pumps and injectors you need! Its number 2 on our, Cummins History, Lesson 5: 07.5-18 6.7L, Performance Roadblocks of the 6.7L Cummins, Performance Roadblocks of the 03-07 5.9L Cummins, Yes, I would like to receive emails from Nitto Tire and Driving Line. Scheid 's test cell evaluates the flow accuracy of a CP3 pump and common rail injectors. The injection pump on a Duramax is mounted in the valley of the engine, between the two cylinder heads, and its driven by the top of the cam gear. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. Even if it's just a leaky fitting, at 240k miles I'd say that CP3 has lived a full life ! To avoid any unnecessary repairs, the first thing Scheids shop technician Daryn Clapp does is check for diagnostic trouble codes (DTC). The method used is fairly simple and gives a clear indication of an injector problem. Depending on how flexible you are and how creative you can get with your arsenal of tools, you may be able to shortcut a few steps and get the FCA removed from a Duramax in a couple hours. The diagnosis and replacement steps are pretty much the same whether you have a Cummins or a Duramax, but the big difference is accessing the pump to replace the FCA. How to diagnose a bad CP3 pump on a 2007 Dodge 5.9 2.
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