The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat. Have airdog so the 3 micro should be good enough. 1) Check the injector returns: 2) Verify the fuel injector return line pressure is greater than 3 BAR (see "Fuel Injectors" for more information). Replace the fuel filter assembly. For an even easier filter . Below we will discuss the reasons for . 3.1 01. Find Fuel Filters for your vehicle's stock fuel system or aftermarket lift pump from manufacturers like CAT, Racor, K & N, Fuelab, and Donaldson. Lift pump with filters is required. Sometimes, not always, the tube that goes to the fuel intake point at the bottom of the tank develops a leak. Typically, unless the fuel line is cracked, you will not see a fuel leak unless you first pressurize the input side of the system. Crank the engine for 15 seconds and verify there is a steady flow of fuel from the fitting on the rail. Fuel lines that kink or collapse may induce a fuel system restriction (high vacuum gauge readings) or DTCs P0087, P0093, and/or P1093 to set. A common problem with high-mileage 2001-2010 Duramax trucks is that the fuel filter head assembly begins to develop air leaks. i have a 05 duramax, from day 1 had gelling problems at -5 or lower. D diesail Once installed the factory fuel filter is no longer needed and can be easily removed by using this Factory Fuel Filter Canister Delete. 2014 - 2021 Duramax LWN. I have a 2001 gmc duramax with lb7 was running great until a week ago when i pulled into the driveway and died. 6.6 Duramax Diesel Fuel Filter with Seals | for 2001-2016 Chevy Silverado 2500 HD 3500 HD Express GMC Sierra 2500HD 3500HD Savana | Replaces# TP3018, TP3012, 12664429, 12633243 . All in all, it's simply a recipe for disaster, and at over $10,000 to replace the fuel system, one hell of an expensive fix to boot. The problem, which is exclusive to the 6.6L LML Duramax V-8, is a faulty fuel filter restriction sensor. . Replaces inefficient 6 micron stock filter with high efficiency 2 micron Cat filter (1R-0750) Adapter Only $79.99 Adapter/Filter Combo $99.99 Replacement Cat 1r-0750 Filter $19.99 Replacement Adapter O-ring Kit $9.99 Fits ALL Duramax Engines 2001-2016 Unfortunately, the Duramax CP4 fuel pump may be prone to failure. It would not start back up. 0 . Dirty intake manifold 03. The 5 Most Common LB7 Duramax Engine Problems Fuel Injector Failure Water Pump Failure Fuel Filter Housing O-ring Leaks Blown Head Gasket Overheating (fan clutch problems, radiator gunk) In addition to the above common engine problems, there are also a few worthwhile to mention problems that affect high horsepower LB7's: Below are some of the most common issues drivers have encountered with the 3.0L Duramax engines. 1. Read full answer. Install fuel vacuum test tool. 05chevy Active member Jun 10, 2010 1,086 0 I changed the fuel filter about 2 weeks ago. Crank start issues Oil pump belt replacement Injector failure Exhaust gas recirculation failure High-Pressure Fuel Pump Failure 1) 3.0L Duramax Crank Start Issues This is the most persistent issue that has plagued the 3.0L Duramax engine. Help Desk. The three FPRV fixes are installing a FPRV shim kit, replacing your FPRV with a race fuel valve, or replacing your FPRV with another OEM FPRV. 3) Unplug the fuel pressure regulator 2 (pressure control valve in left hand rail) electrical connector. 60. It comes with a new fuel filter. As diesel fuel filters do not have a filter in them like gasoline vehicles, it is common for Duramax LLY engines to clog or get dirty over time. What's A Fuel System Replacement Kit? Poor Fuel Efficiency 4 Is 2.8L Duramax Reliable? The Duramax L5P was introduced in 2017 as a replacement for the LML.Featured in the Silverado and Sierra HD work trucks (2500HD/3500HD), the L5P uses the same 6.6L turbo-diesel powerplant that has been in use since the LB7 since 2001. The rubber section of the line could become kinked or collapse. This big improvement in fuel efficiency was principally achieved with: 2. Seems to be slow when accelerating and the dash light stated "Change Fuel Filter" when I bought it. Search Fixya . No Boost 3.3 03. The other issue with the fuel filter system is that the water-in-fuel (WIF) sensor located at the bottom of the filter is made of plastic and is easily damaged while trying to remove or install it onto the filter. You should always remove the sensor and filter as a unit from the vehicle and then transfer it to the new filter. LB7: Fuel problems. Fuel injector failure: Common with the LB7 Duramax engines, the premature injector failure caused so many headaches for owners. Then, if you have the fuel line off the Fuel Filter Pump Assembly that comes from the FICM, you should be able to purge that line of air, while filling it with fuel. the Winchester Truck ) Mods so far: Nicktane Fuel Filter, Kennedy Lift Pump, Titan 52 Gallon Tank, EFILive V2 (Duramaxtuner), Banks Econmind, PPE Trans Oil Cooler & Deep Pan, TranSynd, MA T-Case Pump Upgrade, Custom Coolant Filter, Bakflip HD Tonneau, PAC AAI-GM24 . Failed Sensors 2.5 05. During normal operation, the pores in the media of the Duramax fuel filter become clogged with the omnipresent asphaltenes. Sputtering engine 04. fuel filter, fuel heater both have been replaced. NOW ALUMINUM WITH A BETTER HOSE BARB! While the engine uses the same 6.6L design, many major engine components were completely refreshed in order to create comparable power levels with its . 9.2: Buy on Amazon: 6: KOROP 6.6 Duramax Fuel Filter Replaces# TP3018 Fits for 2001-2016 Chevy Silverado & GMC Sierra . Bosch Fuel Control Actuator MPROP 06-10 LBZ / LMM Duramax $124.99 2006-2010 6.6L GM Duramax LBZ / LMM. Thanks Mike Wheeler Read full answer. it will drain some fuel out and suck air in. Once installed the factory fuel filter is no longer needed and can be easily removed by using this Factory Fuel Filter Canister Delete. There are three relatively inexpensive ways to solve a poorly working Duramax fuel pressure relief valve. I only tightened the filter hand tight because it would start to bend with an oil filter wrench.. Maybe I have the filter to loose. Prime the fuel system with the hand primer until 10 PSI is indicated on the gauge, Other Duramax LLY problems included the following: Head gasket failure Injector harness chafing Water pump failure EGR valve issues Glow plug failure Fuel pressure relief valve Lack of factory lift pump The Duramax fuel filter assembly is bad about sucking air. There was a problem adding this item to Cart. That is why I suggested putting a slight ( .5 -1 psig) pressure on the tank and then inspect all of the fuel system, up to the CP3 for leakage. Apparently, the fuel injectors were prone to fuel leaks, leading to fuel dilution. The Duramax Fuel Filter Delete for your 2001-2016 GM 6.6L Duramax is for use after the installation of a Fuel Air Separation System. This item: OEM NEW 6.6L Duramax Diesel Fuel Filter Housing 05-12 Silverado Sierra 12642623 $121.74 GM Genuine Parts TP3018 Fuel Filter Kit $35.23 Allison Transmission 29539579 Filter $15.89 2007 lbz gm fuel filter 12642623 gm 12642624 gm 97780061 gm 10226035 2007 f350 904 558 lly fuel filter housing Product Description Fuel Filter Housing (a.k.a. Duramax 6600 engines will be much more efficient than previous GM Diesels. Buy Baldwin Filters BF9882 Fuel/Water Separator: Fuel Filters . Sensor problems 02. Quick Ship Shop. 2003 GMC Duramax Fuel Problems. Mar 31, 2010 2003 Chevrolet Silverado 2500HD. 4. XDP carries all the parts and accessories you need for the best diesel performance. There was a problem adding this item to Cart. The DuraMax is a 6.6 engine. If the truck is demanding more fuel than the factory pump can give the fuel rail pressure will drop and the filter life will instantly drop to 0%. Chances are, if you're looking at this page, you're well aware of the problem. Sometimes, the Primer O-Rings go bad. The XDP Duramax CAT Adapter with 1R-0750 Filter, Bleeder Screw & Spacer is an easy way to upgrade the factory fuel filter on your 2001-2016 GM 6.6L Duramax. . I have a 2007 Chevy 2500 (Classic) LBZ Duramax. Fuel Filter Housing Oring Leaks - The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to . Dec 22, 2008 I have a 2500HD with a Duramax LMM (new body style). 6.6 Duramax Diesel Fuel Filter with Seals | for 2001-2016 Chevy Silverado 2500 HD 3500 HD Express GMC Sierra 2500HD 3500HD Savana | Replaces# TP3018, TP3012 . What Are the Major 2.8 Duramax Problems 01. Quick Ship Shop. I really am starting to think I have a leak around the filter.. The engine's CP3 high-pressure fuel pump is capable of drawing fuel from the tank without the aid of an external lift pump as long as the system remains primed. Try installing a lift pump. The bulk of most no-start conditions on an LB7 have to do with the fuel system, some with the starting system, and occasionally there will be trouble caused by other sensors like the camshaft position sensor, crankshaft position sensor, fuel injection control module, a faulty ECM, and more. Evidence shows that Canadian Duramax owners don't seem to have the same issues and it's most likely tied to the formulation of their diesel fuel. The new filter is longer than the original filters used and has a plastic housing. What Others Are Reading The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Loss of prime and engine dies. One thing the '01-'04 LB7 Duramax is notorious for is injector failure. This fuel filter housing is quality tested to ensure a long service life as it has been engineered to meet or exceed . ACDelco Air Filters, Fuel Filters, Oil Filters, Transmission Filters and Glow Plugs for Chevy/GMC 6.6 Liter Duramax Diesel Trucks. Odd Noise 3.2 02. Had to have the fuel filter changed again. Condition/Concern: A dealer may need to perform a repair on the rubber portion of the fuel supply (suction) lines. 904-000 Fuel Filter Housing as a drop-in replacement for the damaged fuel filter housing in your 2011-2016 GM 6.6L Duramax LML. What Do I Need to Check Every Time I Service my Truck? Plus the cat filters are like $12 and . Fuel Filter Housing Head for 2004-2013 Chevy Silverado GMC Sierra 2500 3500 6.6L Duramax Engine Replace 12642623 12639448 904-517. Water pump failure: The LB7 and LLY engines had problems with faulty water pumps. fuel filter has been replaced 4 times in first 5000 miles. . 4.6 out of 5 stars 206. Please try again later. Front end failures are one of the most common LLY Duramax problems. Dependable parts for whatever you drive. Water Pump Failure 3 What Are the Signs of a Bad 2.8L Diesel Engine? One of the most common LB7 Duramax problems is leaking O-rings on the Fuel Filter Housing. If it isn't chipped it could be a bad fuel rail sensor, bad pressure regulator, a bad fuel pump, etc. Towing Capacity 2.3 03. 2007.5 Sierra 2500HD SLE 6.6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, EFi Live, DSP5 a tune from Duramaxtuner.com, MBRP 4" Downpipe back, Edge CTS Insight, Cognito Idler/Pitman Arm Braces, PPE Deep Transmission pan, deep pan filter, Transgo Jr kit. The moment after I installed the filter, it drove like a champ. Truck was running fine day before, next morning started and cut off, primed pump and it - Answered by a verified GMC Mechanic. Turbo Failure 3.4 04. Mechanically, the L5P Duramax is stout and very few major problems have been reported. How to Fix your LLY Duramax Fuel Pressure Relief Valve (FPRV) Problem. It lacked on acceleration before I changed my fuel filter as . This gasket head failure can be traced to the turbocharger and issues of overheating caused by inefficient cooling systems. The drawback is that you now have to also fill your Duramax engine up with diesel exhaust fluid on a regular basis, although it is relatively inexpensive and offset by the fuel economy gains. Heavy-Duty Capacity 2.4 04. Click the "Show More" Option_____Watch this comprehensive step-by-step vid. Buy . 2006 Duramax common problems? With this system, you can increase your vehicle's fuel economy by adjusting the exhaust after treatments. Clogged or Dirty Fuel Filter. They're also susceptible to normal wear and tear. The 4 Most Common Duramax LML Engine Problems CP4.2 Injection Pump Failure DEF Heater Problems NOx Sensor Failure DEF Pump Failure GaeaAuto 2 X Fuel Filter 6.6L Duramax Diesel fit for Chevy Cruze Silverado GMC Sierra 1500 2500 3500. Check for the fuel feed lines coming into and out of the fuel filter( under the foam cover) they can bend and kink under the foam cover . If the fuel level gets below the level of that leak it will start to suck air. Not sure what is going on here but its driving me crazy. Head Gasket Failure Although head gasket failure is more common with LLY Duramax than any other generation of the 6.6 Duramax, it is still a fairly common problem among all 6.6 Duramax. Jump to Latest Follow 1 - 7 of 7 Posts . Finally, they forewent the status quo that had been hovering over this engine since 2001 with the only major change occurring in the 2011 model years with the LML engine. I have a 2005 Duramax 6.6, I just had the fuel filter changed, and day one, started little hard, day 2 started - Chevrolet 2003 Silverado 2500HD question. GM has released a revised fuel filter; see TSB 04-06-04-070. What benefits will I see racing? They offer significantly improved fuel economy (specific fuel economy is 15-20 percent better than GM's current 6.5 turbo diesel, for instance), particularly at highway speeds. That leads us to the reason the pre-filter solved the problem. Chevy/GMC Colorado/Canyon 2.8 Liter I-4 Duramax Diesel fuel filters; Chevy/GMC Colorado/Canyon 2.8 Liter I-4 Duramax Diesel oil filters; . When LLY Duramax LLY engine owners notice that their fuel filter stops up frequently, they should have it replaced right away- even if there are no signs of problems . Likely if there is an issue with any of those systems . Only 5 left in stock - order soon. The other issue with the fuel filter system is that the water-in-fuel (WIF) sensor located at the bottom of the filter is made of plastic and is easily damaged while trying to remove or install it onto the filter. Merchant Automotive 10696 Billet CP3 Fuel Injection Pump Rear Bracket 01-10 6.6L GM Duramax $69.72 2001-2010 6.6L GM Duramax. There are a couple of issues with the fuel filters on these vehicles. What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. . Dealer also says that he has had a lot of the same trucks in for the same thing. Looking for the parts and products show in this video? 9.6: Buy on Amazon: 5: TP3018 Fuel Filter Fit for Duramax 6.6L 4 Micron Compatible with Chevrolet Silverado 2001-2016/GMC. If you're going to own an LB7 Duramax over an extended period of time, the odds are you will experience this problem. FREE Shipping. If you have a 2001-2004 Duramax 6.6 LB7 diesel pickup or are looking to buy one, here are some common issues and problems we have run into in our shop. the fuel in the truck currently is winter mix w/1 gallon power service-150 gallon fuel. Duramax Cat Fuel Filter Adapter Ensures maximum life out of your fuel system! More flow, quicker recovery? OEM NEW 6.6L Duramax Diesel Fuel Filter Housing 05-12 Silverado Sierra 12642623. Run the nicktane adapter with a cat filter 0750, problem solved. Get it Thu, Feb 24 - Fri, Feb 25. Idling Problem 2.2 02. I changed it last night just like i do normally and when i put the new on back on i primed and then went to start and it starts but it is hesitating pretty bad before start up. 6.6 Duramax Diesel Problems 01. . WIX - Fuel Filter Part Number: 33960XE . Buy Dorman 904-517 Diesel Fuel Filter Housing Compatible with Select Chevrolet/GMC Models: Fuel Filters . Start at anything that will cause a sudden drop in fuel rail . Did some research and i desided the cp3 pump was bad so i replaced it with a new one. The best Duramax diesel engine year models that are safe to buy include: 2010 - 2017 Duramax LGH. Additionally, modern diesel fuel has removed sulfur which destroys the natural lubricants in fuel that would help with this issue. 2008 chevy c5500 w/duramax having intermittent problem with "check engine light" then replace fuel filter lights upthen reduced engine power light comes on then you have to pull off of road and shut down and restart. I don't think I'm the first person that has had injector problems with the Duramax . Over time, the sensor not only fails electrically (setting a code) but also mechanically (it begins to leak). Prolonged friction in the fuel pump causes metal components to rub together and . A lack of lubricants in the pump can cause friction within the pump. . Follow the GM fuel system diagnosis in the service manual. 2 Major 2.8 Duramax Problems that Users Face? The solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the injector. I need some good feedback. Duramax Hard Parts General Fuel System & Exhaust Questions 1 2 Next DetailsUnlimited Active member Oct 26, 2009 1,264 0 36 Benton, Ar Dec 27, 2010 #1 Just put a loop in it to bypass the filter. 5 Most Common LMM Duramax Engine Problems DPF system & active regeneration Leaking transmission lines Fueling / low fuel pressure Piston / crankshaft failure Allison 1000 power limitation The LMM is an extremely capable engine. 2011 - 2016 Duramax LML. The durable anodized filter adapter simply threads on to the OEM Filter Head and allows you run the more efficient and less expensive CAT Filter on your truck. One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again. As these trucks continue to get older, the original o-rings can deteriorate over time. The FASS DFD-4000 Duramax Fuel Filter Delete for your 2001-2016 GM 6.6L Duramax is for use after the installation of a FASS Fuel Air Separation System. Just had the fuel filter changed two weeks ago and the truck went into limp mode say "reduced power". Well, one problem is, if its an 8.1, its not a diesel. As I understand it's simply a float that detects water due to the buoyancy of water opposed to diesel and the sensor cannot detect any forms of "dirt" or "restrictions" that are indicating bad fuel (Aside from water) and the fuel filter life is based on the same system as the oil life monitor (simply time/mile based) and nothing more. Timing chain failure Solutions to 2.8 Duramax Problems Replacing the water pump Change your injectors Clean your sensors Fix your lift pump Pro Tips: Maintaining a 2.8L Duramax engine to avoid problems You should always remove the sensor and filter as a unit from the vehicle and then transfer it to the new filter. Quick Ship Shop. The fuel system featured on the L5P could best be described as a 100% complete overhaul. Find the perfect Lift Pump System for your vehicle . Duramax Filter Head Delete Tube UnderDog Diesel SKU: FilterDeleteTube Price: $9.25 Stock: In stock (6 units), ready to be shipped Quantity: Add to cart Description Description Completely removes the factory filter head utilizing the existing lines & clamps. Dealer says it was clogged up. LBZ fuel filter problem. 2012 - 2021 Duramax XLD28. Mix in Murphy's Law and potential problems become real life bring-it-into-the-shop problems. currently it is at dealer#3. $120.60 $ 120. Now it still wont start unless i use strating fluid and it will not idle. Sometimes the filter housings crack. Please try again later. Because your Duramax fuel filter is located after the fuel filtration system . Check out the deal on Dorman 904-000 Fuel Filter Housing at Xtreme Diesel Performance. Change Fuel Filter: 15,000 miles: 24,000 Km: Replace Air Filter: As needed or every 30,000-45,000 miles. duramax07tmd said: I have changed my fuel filter several times and i have not had any problems until last night. Suddenly the main filter had a much more manageable task: all it . Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. As more pores become clogged, the fuel has less and usable media through which to flow. . . 2005 Chevy Duramax LLY | 12" Cognito - 8" Deavers | Kryptonite Steering |24x14 AF's - 38" Nitto's EFI Live DSP5 King Spade | 68mm Billet Cheetah | FASS Platiunum 150 | Suncoast G-Max 5 w/ 1056 . The fuel filter housing is on the suction side (there is not a supply pump from the factory) and are prone to suck air. 48,000-72,000 Km: Flush Cooling System: 150,000 miles: 240,000 Km: . Model year 2017 marked some major changes for the Duramax fuel system. This combination, sophisticated equipment and a single-stage fuel filter, was a formula for potential problems. Duramax Fuel Filter Housing 1. Unplug the fuel pressure regulator 2 (pressure control valve in left hand rail) electrical connector. Another possible problem is that the fuel filter, WIF sensor or the filter head could have problems. Spout (which has 3 shop towels over it to keep things out of tank) to pressurize your suction line. The ideal fix is to use Duramax aftermarket parts like a cold air intake and either an aftermarket turbo inlet or one from a stock LBZ engine. Check the injector returns: Verify the fuel injector return line pressure is greater than 3 BAR (see "Fuel Injectors" for more information). He looked it up in the computer and everything and it was the bleeder screw specifically for the duramax fuel filter housing. GMC had to recall the issue for this design flaw. . The good news is that we now understand the source of the problems and GM has made significant improvements to the DMax fuel filter. The following tip applies to all 2001-'06 General Motors trucks equipped with the 6.6L Duramax Diesel engine, RPO LB7 or LLY. It shouldn't take long. GMC and Chevy Duramax LB7 6.6 Diesel Common Issues and Problems. dealer says that they don't know what to do since the check engine light is off now and driving around doesn't . 2011 - 2021 Duramax XLD25. The 8.1, or Vortec 8100, is a gas engine. Shop Fuel System for the GM Duramax 6.6L 2006-2007 LLY/LBZ! 2.1 01.