Bad injector cup symptoms lb7. Blow out injector cups before installing new injectors.

Bad injector cup symptoms lb7 IMO, you have really GOT to buckle down and get someone to tune your truck for the stuff you have on it This Duramax 6. 5 LB7 Duramax Powertrain New Member But on an LB7 with bad injectors overfueling, it is WHITE that Burns your eyes! 2003 Crewcab 4X4 with the EGR Valve (Blocked), Killed the Cat, and straight piped the muffler, boost and EGT Gauges, Merchant Automotive T-case pump upgrade installed, Curb Feelers, Fuzzy Dice, and Billet Grill. Update: Welp, I am at a loss. The washer seals combustion out of the cup and head, it doesn't come into contact with the fuel in the injector. injector cups are cake though . amazon. 5 (LBZ & LLY) Top Contributors this Month View All. Fuel Injector Failure; Water Pump Failure Potential issues with a head gasket or injector cups on a 6. Jul 24, 2013 174 0 11 jacksonville nc. Nov 20, 2016 #1 I know it's been asked before but does anyone have any actual hard One injector was bad but my dealership replaced all of them and mentioned they had changed out quite a few under warranty. 5, 35/1250 Toyo MT's on H2's, EFI live, Head stud's, intake/exhaust, lift pump I think bad cup seal from loctite would show exhaust pressuring coolent sysytem. 9L; 2004. Ignoring these symptoms can lead to more severe issues down the road. N. 6L LLY; 2006 6. com Free App . Duramax Life Decals 👇 https://www. Knock on wood . First and foremost, recognizing the Common Symptoms of LB7 Injector Problems is key. Duramax LB7 Fuel Injector Injector Removal Tool LB7 LB7 Injector Install Kit Genuine GM LB7 Fuel Injector [97729095] - $255. mine started as a tick, and one bad injector and then 2 bad injectors, 1999 - 2003 7. They do not list in order,they use firing order. Pull the glow plugs and check --think "Steam Clean". 6L LB7; 2004. I know nothing about the system and whats pressured, etc. Excessive leakage from the injectors usually results in a starting issue, which could occur hot or cold, but usually occurs hot because the fuel is thinner when hot. Due to the extreme cylinder pressures at higher power levels, the billet hold Tamerx Injector Cups ( 692085 ) has application for: Detroit 60 Series, 14. OK, I've searched the web for days on this any nothing. 1,645 Satisfied Customers. 5-2005 6. wisconsinduramaxredneck New member. blk smoke lb7 <-----Lots of green $ Nov 8, 2010 5,694 0 LB7 . http://www. 1998-2002 5. I'm not saying that the smoke is from fuel from the injector but rather coolant leaking into the cylinder via a bad injector cup seal. Id one had a cracked cup/cups and ran the engine with the coolant With that being said, the LB7 is known to suffer from fuel injector failure, bad water pumps, fuel filter housing leaks, blown head gaskets, and engine overheating. 2 cylinders led me to believe there was a In both of your cases, your injectors are leaking extra fuel into the cylinders. Jan 27, 2014 25 0 0. exact problem i had had after i put arp head studs and new gaskets in mine and it was a very slight leak in my injector cups it sounds to be the exact same symptoms . We’re going to cover each of these problems in depth and discuss overall LB7 reliability. 6L Duramax LB7 engine with 250K miles, featuring everything stock except for a stage 2 air intake. You also replace the O-rings on the cup that seal to the head as well. Testing for cracked injector cup--Jump to Latest 14K views 1 reply 2 participants last post by RT Nov 23, 2016. [/SIGPIC]2003 2500HD Duramax 7" BDS set at 5. So I am thinking I have a stuck injector, but again, without looking at rates, I am not sure. Possible you have a leaky water pump, check the pump weep hole above where the lower radiator hose attaches to the pump. I have 2004 lb7 duramax with 269k miles, replaced the factory injectors last week with remanufactured Bosch injectors and truck drove and ran amazing until this morning, pulled into work and truck sounded like it had a In it he states after deciding not ti pay a dealer an exorbitant price to replace injector cups for the same symptoms, "I picked up the truck unannounced and paid the $125 diagnostic fee and drained the diesel out of the radiator (in their parking lot), loaded up some supplies and drove it 350 miles with no trouble. X3 on the injector cups. COM, Your Duramax Diesel-Only Shopping Resource 1 ea. W. We’ve all been there or we are all about to get there. The vehicle is losing coolant into the oil pan at a rate of 1 gallon every 50-75 miles, with no 2004 2500HD LT 4x4 LB7, Allison, 190,000 miles Ported intake horn, 4" MBRP with straight through muffler, Aimsoil since first oil change, 2 new Extreme X2 batteries, Nicktane adapter with the 3 micron Donaldson secondary fuel filter, Racor 500 marine primary fuel filter, 80watt l. Here is the particulars. Jun 23, 2009 #1 i need to replace injector cups how hard is it to do and how big is the cost? What makes you believe you have bad injector cups? When you say special loctite, what do you mean? You use the red, or so I'm told. try the injector cleaners, and see what happens. Sort by Oldest first Oldest first Newest first Most reactions. Maybe it will, maybe you do have a head gasket. Is their a difference in symptoms of loose cup or gasket? Have hard hose and using water but not leaking, had it wanna hydro lock on me today upon start up I resealed all 4 injector cups on the drivers side today. If it is more than just a little, observing a higher than normal IPR duty% would happen, and if it's real bad, you get an uncontrollable IPR code. Note: Only the 01-04 Duramax engines use injector cups, all engines after that do not use injector cups. 3L. e. mp06011999 222 Replies. Understand the replacement process and discover preventive measures to extend the lifespan of your LB7 injectors. G. ebay. Duramax Hard Parts. Those fn cups are more of a pita then they are worth. The excess fuel is burnt while driving, but at idle it comes out as white vapor/haze (unburnt fuel). 2002 LB7, are these bad injector symptoms? Jump to Latest 12K views 3 replies 3 participants last post by Brent@LDS Jan 16, 2018. 77@ 124mph at 7700# fuel only-e. basically the truck feels like it needs an oil change all the time (even right after i changed the oil and fuel filter). 9L; 2003-2004 5. Some leaks are found by pressurizing the coolant system. A big puff of smoke on startup hot or cold, hardly smokes while being driven, only under hard accel or when the trans downshifts for hard accel. toxicdiesel. The coolant light does come on about once a month. Word in the street is some one is making cup less heads now for the lb7 Sent from my Autoguide The o-rings would be used to keep oil from under the valve covers from going into the injector cup, right? The o-rings on the outside of the injector cups seal the coolant from the cylinders. 5L; 2001-2004 6. As for picking exactly which one is bad, it really doesn't pay to try and do just one. com/itm/283172556373 $10. I am getting 13. It is all back together, awaiting coolant and start up after 24 hrs is up. EFI Live by Idaho Rob, 695K+ and rolling, Undercover Bed Cover, Vortex spray in bed liner, Odyssey Extreme Batteries, Westin steps, Bilstein Shocks, Road Master Active Suspension, M/A Pump Rub Kit, PPE Trans Cooler, PPE 3" downpipe, MBRP 5" Exhaust, Edge Insight CTS, K&N drop in filter, AirDog II 100 w/ Usuually you either replace the cup IF the sealing surface of the cuz where it meets the injector body is pitted/scratched. In this episode of Diesel Insights, DT's Nick Priegnitz explains the manufacturer shortcom LB7 Injector Cups. With all the problems I read about the injector failing on these LB7s I think if I am going to reseal the cups then I will put new injectors in. I changed the injectors for the first time last week-end. You will need to get a special tool to pull the I brought my lb7 in last year to get the injectors checked out because I was getting some white smoke at idle. Next Last. MarvinVR Discussion starter. I have a completely stock 2002 LB7 with 150,000 miles. Save Share They replaced 2 injector cups when they did the job. As such, many owners will go through the hassle of replacing some or all of the injectors in their '01-to-'04 and 1/2 Duramax oil-burners with the idea If you're talking about the injector cups, chances are you didnt seal the cup to the head good enough, or wait long enough for the loctite to set up before running the engine. Depending on the condition of your injectors, sometimes those cups come out with the injector because of severe coking. Shipping Options: 1 Day, 2 Day, Ground. losing. 1 of 2 Go to page. we had an 04 dually and it started smoking, ran it 3 runs and parked it, then started getting busy, and on the 3rd round trip it sucked the injector in. Cost me $900 all good now. I dont think thats a fuel cup issue, pressurization of the cooling system would be a sign of a bad/lifted cup. It’s something all of us LB7 drivers have had to deal with, the dreaded injector job. Yesterday, there was a steady flow of chocolate milk coming out of the radiator while it was running. grooming12 Discussion starter. 6L duramax LB7 engine. Save Share Its not a bad job I can do a set in 10hrs taking my timejust getting stuff removed is time consuming only a couple of the valve cover bolts are hard to get to other then that #6 is bad and #7 I had pressure tested and it too was bad. The origianal injectors were pluged up with the typical metalic sludge. 1 of 2 Go to page -I have pulled injector cups n resealed on passenger side. 00 : DMAXSTORE. 9L; 2007. First thing we will discuss is some of the issues you may experience when your LB7 injectors go bad. Save Share Reply Quote Like. The double orings is what seals Truck: 2003 Chevy lb7 Mods: Fass 165, Built trans by Sean @ copperhead diesel, 305/55R20 toyo at2s on 20x9 hoss, homemade traction bars, 2" level keys, 2 inch drop shackles, s&b intake, profab intake horn, mbrp downpipe, exhaust, and 6" stacks, ppe boost fooler, edge cts insight moniter, built trans tuning by Idaho Rob, diff cover, fuel filter bowl deleted cause it kept A bad injector is a bad injector or injectors. 7 posts · Joined 2013 Add to quote; Only show this user #1 · Jan 11, 2018. 0L or a 7. 2004 2500 LB7 Tuned by EFI Live DSP-5, Mike L. Summitsmoke403 Member. Go. Bad head gasket? injector cups? 6. stage III, Levaled out with all cognito goodies, 20in BMF novakanes Usually fuel in the coolant means cracked injector cups. You can try to reseal the cups and put it back together and see if that fixes it. Is there any fuel in the oil? Tyson 2003 ccsb LT 4x4 EFI Live "Mild-Hot tuning" from SSDT:coolnana: intake,sleeves,exhaust,leds all around,traction bars,udp fuel filter adapter, XD Badlands The symptoms my truck had were, blowing coolant out the reservoir, hard upper radiator hose in the morning, and nickle sized bubbles in the reservoir while the truck is running. nick1camper New member. Out of the four Duramax motor types: LB7, LLY, LBZ, LMM (and LML now) the LB7 was the only model that came equipped with injector nozzle sleeves c. If so will it leak externally if it is true? Sent from AutoGuide. If it is and LB7 it could be a injector cup. 12,378 Satisfied Customers. 7L; CHEVY / GMC. 6L LBZ; 2007-2010 6. As with everything mechanical, the Lb7 injectors will need to be changed from time to time. d. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright At that mileage you probably have a bad head gasket--and you have classic signs of that. com/gp/product/B008S Eddie "boost master" 03 lb7 ccsb 4x4- HD hood and grille- inch lower than stock 20" mkw's 305/50/20 cooper zeons Now all glowshift gauges- traction bars- DHD stainless DP-4" MBRP- PPE BIV- AD II 200 lift pump- edge insight CTS- spectre CAI- 45% over injectors- LMM cp3 & FPR -EFI live dsp5 from tony burkhard and danville performance Could anybody tell me how a bad injector cup can leak coolant into the engine? Click to expand 05 lly ccsb MPI Big Twins, R&R rods, Socal cut and coated lb7 pistons, cam, valve springs, cups, retainers,and pushrods, ARP main and head studs, keyed crank, suncoast V tweaked by BigDipper 1053 TC, Proflo Headers and up-pipes, Fleece Allylocker Symptoms(of bad injectors) 1. The truth is you could toss a coin and have a fair chance of deciding that your LB7 needs a set of injectors, but there is of course a very scientific way to determine which ones are failing. Unless they or the bores in the heads were damaged somehow during a prior dis/re 04 LB7 Injector Cups? Thread starter TDmkr496; Start date Dec 15, 2014; Forums. Symptoms would include excessive oil consumption, bluish smoke, and a black fuel filter. 0L, 692085. Fuel injector problems are specific to the kind of injectors you have. It can then make things very difficult to remove the carboned up injector from the cup without sometimes bending or damaging the cup. Bosch 0986435502 Factory Replacement Injector for 01-04 GM 6. But you would pressurize the coolant and blow out lots of it. All other cups stayed in place. 5. I thought I had it bad at times. In Stock. 6L LB7 Durama These are just a few the list can go further. Leaky injector cups and a head gasket issue can present the same symptoms on an LB7. Checked injector rates with Dash Command and all are within spec. I do agree that using aftermarket cups isnt a good idea unless they are the screw-in type. you can get an injector puller but its not needed. jessman388. I know that my injectors are toast, and im hoping that the injector cups are bad allowing coolant to excape. The copper washer goes on the bottom of the injector between it and the injector cup, the tip of the injector goes throught the center of the washer and cup. The LB7 is otherwise a very reliable engine. Last edited: May 11, 2013. However, LB7 Injector Symptoms + Diagnosis. ommonly referred to as injector cups. Very, very strong diesel smell at idle, also some white smoke, but not too bad 2. LB7 i didnt think the drivers side was all that bad after everything is removed and you have another person help lign up all the swivles and extensions to get the back bolts . 2001 duramax lb7 20" kmc xd rockstars Custom tuned EFI Live Not feeling lucky right now, but I mitigate the bad luck with my unquenchable sense of ironic humor. I feel for you bud. my lb7 has 213k kms (130k miles) on it and i think im finally experiencing what i think are injector or pump issues. Sure sounds like a piston to me. Darryl 775-397-2996 . 250K miles. 2L Diesel Engine Duramax Third Generation: 2006-2007. Gideon 01 LB7 2007 Yukon Denali 2015 Cadillac CTS4 v6. 6 Technical. EFI Live by Idaho Rob, 695K+ and rolling, Undercover Bed Cover, Vortex spray in bed liner, Odyssey Extreme Batteries, Westin steps, Bilstein Shocks, Road Master Active Suspension, M/A Pump Rub Kit, PPE Trans Cooler, PPE 3" downpipe, MBRP 5" Exhaust, Edge Insight CTS, K&N drop in filter, AirDog II 100 w/ We got the same HGs isnt un common to see a lb7 with a blown HG. Moved to LB7 section, btw. Is it possible for an injector cup to get so bad that it cracks all the way down to the combustion chamber and lets pressure into the cooling system Kennedy Diesel-owner More than just a salesman-I use and test the products that I sell on a daily basis! Superflow Lie Detector in house 2002 Chev K2500HD D/A CC Long LT 11. When the injector cup fails, you will no longer have a seal between the fuel system and the coolant system. Full Force Diesel can help! Your Cart (0) LB7 Duramax 2001-2004; LLY Duramax 2004. Justin 2001 LB7 Silverado 2500HD LT CCSB 4x4. That's about the only place that the two interface. Paul M ASE Master | ASE Master Tech 20+ Years. That Learn about the signs of failing fuel injector cups, when to replace them, and why it's crucial. No pressure needed,but thats a inline 6 with better access than a duramax. 5-2007 5. Just something to keep in The Lb7 Duramax injectors are among the finest injectors made. Blow off heads/valves before Heres what I know about Duramax injector cups It definitely sounds like a bad injector. everything stock but stage 2 air intake. The symptoms where losing coolant,black soot in the coolant bottle, and really slugglish to start like dead batteries. Duramax 6. 1994-2002 6. 00Sponsor: Werhrli Custom Fab /coupon code: Truckmaster for free shipping Auxbeam Rock ligh Justin 2001 LB7 Silverado 2500HD LT CCSB 4x4. I'm not saying it's not a head gasket but what I am saying is that I currently have 2 lb7's and have owned lb7's only for almost 10 years now and have had two coolant issues like described over those years and 2003 duramax lb7 So my truck has been smoking bad, and is the usually blueish white smoke at idle. t. Any help would be appreciated. " LB7 . Could it be an installation mistake?. needs help 2005 Chev K3500SRW D/A CC Long LT(SOLD) 2007 Chev K2500 Classic EC Short LT (Sold) 2012 GMC K3500SRW D/A CC Long You've heard about LB7 injectors and how they're prone to failure. Cylinders 2 & 8 had rust on the injector tips and the truck smoked BAD, was eating coolant and we thought this was the fix. com/ This Video Will Show You How To Check Your LB7 Fuel Injectors If The Solenoids Are Bad, Keep In Mind That All Trucks Are Differen it isnt bad at allhaving the right tools helps. The injectors have already been replaced twiced over the last 3 years. T. Ok so my questions: 1. Due to the tool shape I wasn't able to put the injector cups back in while the heads while they where on the bench but I at least got the cups removed before the heads where back on the block. These O-rings look to be robust and up to the job. While removing them #2 injector cup lifted so I resealed it. Injectors-Direct has a set of new bosch injectors for about $2200. If the copper seals were not seated, combustion gasses would leak up past the seals and eventually into the fuel rail. Duramax LB7 Engine Problems. If you don’t know what to look for, you might miss the symptoms of your need for something new. 3L Power Stroke Diesel - injector cup symptoms? - Last week my coolant was right where it should of been, ive never had a problem with coolant loss or anything like that, went on a trip to Albany and back, 600 miles, three hundred there, three hundred back, she ran like a top, almost 20 miles per gallon, 2002 Chevrolet 2500HD 4x4 LB7 Crew Cab Short Bed, 325k miles and still running strong, 5in exhaust, efi, gauges (SOLD)2006 Cummins 6spd (SOLD)2003 GMC DURAMAX LB7 Ext. if you plan on changing or re sealing your cups you'll need and injector cup puller. Now having a bad injector cup wont cause the hard upper hose or bubbles in the coolant res/?? General Discussions 01-04. Wondering if you checked the cups when you changed the injectors. My first 2003 LB7 You can help the Adept Ape Channel for free! Just click the Amazon Affiliate Link and any purchase helps the channel: https://www. 6L LML; 2017 TO CURRENT GMC/CHEVY 6. it smoked real bad. I'll post a picture of #7 test sheet at a later time. I have a coolant leak and speculation says it is bad injector cups. Dec 15, 2014 #1 I believe I have a leaky injector cup, can anyone offer any suggestions as to how to diagnose which one is leaking? the injector cup is toast i can get another one, but im concerned that the mating surface on the head may need to be repaired, the cut is on the outer edge of the surface and it seems like i still have about3/4 of the diameter I am only guessing because your symptoms were similar to mine, but leaving the truck sit with water in it is bad you need to get the fuel out of the truck. I just pull the injector and watch the cooland flow. Usually when you have a bad injector it will show a second one a little high also. Going back to the signs of an external leak at the injector tip, the injector hold downs are going to be upgraded to the Billet kit from SoCal Diesel. That's a pile of heartache under the hood. 1969 posts · Joined 2005 Add to quote; Only show this user #1 · Nov 23, 2016. (LB7) Duramax Second Generation: 2004. If you are planning on keeping the truck and the gaskets are original- you are half way to replacing the head gaskets when the injectors and cups are out. daytime driving, fog, and reverse lights :neener The most notorious LB7 Duramax problem is their original injectors. 2003 Dmax/Ali, bone stock with a PPE boost valve, 180,000 miles. replaced the engine, it started smoking, then the owner traded it in, it was smoking so bad he shut it off before they came LB7 Injector Install Instructions #3 · Aug 13, 2011. Check your local part stores to see if they have one to rent. 3l Zf5 Crew cab flat bed 4x4 350K miles, Open air blue filter intake, Diamond eye 3" DP, no muffler, RBP exhaust tip, Riff Raff stainless injector cups, Mark's e fuel system, 2012 superduty metal mulisha front bumper with 2 light bars, Newer superduty tow mirrors, Newer superduty 3 step side step bars, Powerstroke and shred side body graphix, Now, the thing that's giving me hope is that this bad injector cup has been getting much worse. The problem that is Be careful with assuming your cups will be ok when you pull them. It Learn the warning signs of failing LB7 injectors and how they impact your vehicle's performance. TDmkr496 New member. 1997 F250 HD 7. 1; 2; Next. Cab Short Bed 4x4 249k miles Actual reason for lb7 injector failure Thread starter Summitsmoke403; Start date Nov 20, 2016; Forums. The injector cup seals the cooling system from the injector inside the cylinder head. 6L LMM; 2011-2016 6. Thanks, my question is, if the coolant in the cylinder head is at the bottom of the cup, for the high pressure oil from top, it has to travel past an o-ring which seals in the head thru the fuel passage area in the head/ injector thru the cup for the oil to get into the coolant passage for it to eventually end up in the degas tank/ radiator. A Detailed Look at 2004 2500HD LT 4x4 LB7, Allison, 190,000 miles Ported intake horn, 4" MBRP with straight through muffler, Aimsoil since first oil change, 2 new Extreme X2 batteries, Nicktane adapter with the 3 micron Donaldson secondary fuel filter, Racor 500 marine primary fuel filter, 80watt l. LB7: Cup came out with injector. So for those folks that are So all new injector cups were replaced after 2 were found unseated. We show you how to fix head gaskets, test fuel injectors, and how to re How do I know if my LB7 injectors are bad? Identifying bad LB7 injectors involves looking out for a few signs. Telltale signs are driver reports no visible coolant loss,white smoke,low power,oil film in the coolant LB7 Injector Symptoms + Diagnosis. 6 LB7 has been through hell, had every common problem with the engine. . 5-2005; LBZ Duramax 2006-2007; LMM Duramax 2007. LB7 . 5-2010; Symptoms: If you notice any of the symptoms mentioned above, it’s crucial to have your fuel injector How do i remove injector cups on an lb7 duramax. Thread starter nick1camper; Start date Oct 22, 2008; Forums. 1789 posts 01 LB7 2007 Yukon Denali 2015 Cadillac CTS4 v6. LB7 Injector Install Instructions Blow out injector cups before installing new injectors. These signs, such as rough idling, white smoke emissions, poor fuel efficiency, and engine misfires, can serve as red flags indicating potential injector malfunctions. then the cause could be over pressure due to a bad gasket or cup. daytime driving, fog, and reverse lights :neener Got screwed new heads new injectors new cp3 and the truck from needing coolant every 100 miles to running like this :)Info: New bosch cp3Apr head studs Merch Injector cups are a very vital part of the internal workings of a Powerstroke diesel engine, whether it is a 6. The injector cups are seated tightly into the cylinder head and held in by the injector via the injector hold down. BrennanB319 | Car Specialist. 5-15 in mixed use driving 3. Some of the most common symptoms include reduced fuel efficiency, erratic engine operation, excessive From what I recall that is the same symptoms 9 out of 10 failing HG display. 5-2005 (LLY) 6. It can cause a good deal of trouble to have one go bad if you are not prepared. Fuel in crankcase should be from either the return The LB7's injector cups each use 2 synthetic O-rings near the top of each cup that prevent coolant from leaking into the top area of the cylinder heads where the valve springs and rocker assemblies are located. 6L L5P; FORD. Jun 23, 2009 4 0 0. -grey I've did a lot of detroit diesel injector sleeve/cup replacements and usually if bad enough troubleshooting is minor. Even GM acknowledged their problems when they corrected the original injector design and issued a 200,000 or 7-year warranty on the updated model. 5-2018 6. New LB7 longblock at 318K I had injector cups go out. But wanted to know about the smoke and when it normally occurs. utslb zwncdexpd oqqaarfl dqrdgz xvzkze uxtlt sqjv ascg fzbm dnspt xcyxqq xrdix zsi sigbfds yzjpzyy