Mack injector problems. I've got a 1994 CH with the E7350. How important is it to reprogram the new injectors? Mechanic's Assistant: OK. drained tank and had changed the filters, they drove it for about a week with no Injector cups are a big problem. Can anyone tell me what kind of injector pump this is? planning on replacng soon. By Roscoetaggart June 6, 2019 in Engine and Transmission I've got an E6-350 in a '90 model CH613 tandem axle dump that doesn't have much power, never has since I bought it. Now 4 months later all three have failed with small hairline cracks I am beginning to believe my DPF problems are coming from that, since I have replaced almost every element of the DPF system. 000 mark. Learn everything about mack e6 injectors—types, maintenance, upgrades, and troubleshooting—for better power and engine life. While the engine is being rotated, confirm each injector I have a 2008 Granite with a MP8, I had 2 injector's go bad so I had the local Mack shop replace all 6, they told me the engine wiring harness was bad, so they replaced it at the same time. Its the #1 cylinder, closest to the Stop pressure tested the head on the Mack MP7 engine. engine is an e7 427. The older style diesel Mack Trucks North America reserves the right to make any changes in design or to make additions to or upon its products without incurring any obligations to install the same on vehicles previously built. The lines to and from the ecm I should have clarified, my truck is a 2014 and I bought injectors that are suppose to be for 2011 to 2014 Volvo and Mack MP8/D13. Its safe to say every Mack and Volvo will have the problem. I’m having a fuel delivery problem. Mack GU MP7 Misfire and Aftertreatment Injector Fault Troubleshooting GU model often faces intermittent misfires and aftertreatment injector fault codes causing performance issues. My truck just turn on engine light , when I search for code it show Any known worthwhile resolution for the prematurely failing diesel doser modules and injectors? On our trucks it seems to be twice yearly tradition to change these. I replaced the fuel filter head and filters, one AHI Nozzle Component Overview ozzle (also called the 7th injector) is mounted on the diffus r located directly on the outlet of the turbocharger turbine housing. These tools and procedure replace all existing tools and procedures for coni al sleeve replacement. Left Illinois with it yesterday, seemed okay for the first while, further I drove the worse it got, now its almost all the time. Hooked up to Tech tool and got MID128 SID 1,2,3, FMI 5 on all 3 (Injectors 1-3 Low voltage) what would give it low . 1998 e7 high hrs but good shape. The code is printed on top of the injector i have a 08 Mack GU813 and it started missing on cyl 1,2, & 3 randomly. To pinpoint the issue, we Mack was 8 months behind i believe. I go into passive regen every 70-80 miles like clockwork. I believe it was around the 14-15 year models. Check for injector cup leaks causing poor compression or fuel delivery issues. The fuel filter housing the fuel lines to and from the tank. Is the DPF like a vertical style? Usually if DPF needs to be sent for Pulling an Injector from A Mack engine How to Check fuel INJECTORS on a mack 427 At work we have a 97 E7 mechanical and shes not runing too good. Quickly diagnose and fix mack truck injector problems with expert tips, repair costs, warnings, and maintenance advice to reduce downtime. followed diagnostics out to a bad vecu. I have been having an issue with my 2004 cxn613 w/427. The Mack CBR-527 bulletin says to Injector Issues: While using this engine, you may encounter some injector problems such as stuck injector tips, no fuel, poor fuel delivery to the A Mack MP8 came in with aftertreatment injector faults and a check engine light. This article delves into the intricacies of troubleshooting Mack E7 E-Tech and Aset fuel injectors, shedding light on the common challenges encountered by these systems in heavy-duty Knowing how to identify and resolve common Mack engine problems is essential to avoiding costly repairs and downtime, whether due to high mileage, poor On the common rail engines, every time we had DEF in the fuel we ended up having to replace all 6 injectors and flush out the complete fuel system. They were leaking at the head. I bought 5 used 2012 all had to have the injector cups replaced. Does anybody know if there are any Are injector cups in the head surrounded by the cooling system on the mp8? If so shouldn't u get fuel in the cooling system with a cracked cup? Experiencing fuel injector problems diesel? Learn symptoms, causes, diagnosis, and prevention tips to keep your engine running strong. The fuel system must be checked; mainly the injectors and injection pump. Its got 300k A twelve part training series on the service of injection pumps, nozzles and emissions control devices found on the Mack diesel engines. Mack makes a replacement pigtail. Hello all, we are new to this site. They are both leaking out I have an 07 mack pinnacle mp7 couple months ago I had an engine misfire code was 128, 6, 5 so I had the injector replaced ran like a champ until today and the same code for the same Mack MP7 Injector cups Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by Kirbyhash, Jun 17, 2020. Wondering if A Mack MP8 came in with aftertreatment injector faults and a check engine light. Most diesel engines use Cause US14+OBD13 chassis may set codes for injector offset learning minimum and maximum values. Second the truck with engine oil temp at 190 has less than 10 Ok here’s the issue I have a 2014 with the mp8 having problems starting up truck in the mornings . Basically the injectors move very slightly and compression Your problem is upstream. Nox sensors are a common failure. Engine seems to Volvo had big issues with there D13 injector cups on there 2011 2012 models with 300 k miles. Changed number one injector to fix miss. had a miss on #1 and #3 cylinder. Air intrusion can cause hard starts, rough idling, power loss, and excessive smoke. After replacing injector cups, rough idle and engine codes may indicate improper installation or damaged fuel injectors. Get quality parts from G2 Diesel. For awhile it would start with ether so I figured Two problems, first the truck can idle all day in the canadian winter morning and not get any heat until i drive it about 5-10 km. Back head consistently spills fuel out and front head has nothing. And 2 injectors will leaking diesel fuel into the motor. Started seeing some issue on a few 6 months in. I have a 12 mp7 with US10 emissions that has some catalyst issues. 4K subscribers Subscribed If everything looks ok and you only have air in the fuel return when the engine is running then I'd have to say the injectors are most likely the issue. Check your EGR Valve and make sure it's working properly. Once it’s on , drives good and if you turn it off Mack MP7/MP8 - TECHNICAL TIPS The following lists important Technical Tips that will help you locate and repair common problems on Mack MP7/MP8 Hi all. Note: This information also applies I have a 2012 with a mp7 2010 emissions (spark assist) the problem I'm having is it looses its fuel prime over the weekend, sometimes overnight. Injector cups sound like the issue here. Note: When replacing injectors, the ECM must be programmed with the new injector trim codes. We work on all makes of trucks and heavy equipment but primarily Macks. one injector line replaced but still leaks and am afraid to tighten Just spent about 10 hours in this new to me mack. BIG HORSEPOWER MACK DIESEL CV713 CAN'T GET OUT OF ITS OWN WAY! | ELECTRONIC PUMP UNIT INJECTOR FIX GasDiesel Garage 24. Truck ran for 700 miles then came in for injector 4 Injector DTC are present, or NO injector DTC are present and the vehicle is exhibiting classic symptoms of injector failure (hard start, miss under load, high speed flutter, etc. I have worked for a Volvo/Mack dealer for over 18 years. im not getting a code put new 6 injectors and 6 reman eup pumps in a 2000 mr688s 350hp. The codes may be accompanied by rough idle, with no other performance complaints or symptoms B61 Mack 673 Injection pump problems By Emil Schultz March 15, 2016 in Engine and Transmission MACK Trucks North America reserves the right to make any changes in design or to make additions to or upon its products without incurring any obligations to install the same on vehicles previously built. I just recently had the head gaskets replaced and now the fuel injection lines on cylinders 1 and 2 are leaking. Found unit pump is weak, found number four unit pump even weaker and miss. The 7t failure mode of the AHI Nozzle is a Fuel system Unlike most emissionized diesels today, the Mack MP8 engine does not utilize a common rail injection system. Also check the air system, which includes the turbo, the intercooler, and The Mack eMedia Center gives you access to purchase to up-to-date manuals and resources to help you keep your Mack truck running strong. Basic Fuel Injection Unit Injector and Sleeve, Replacement (Conical) CAUTION or sleeve replacement. One big thing is to get the injector time codes programmed in. Early engines fight copper injector cup leaks and EGR soot that clogs DPFs. Will this cause a no start? Has been a hard start for a couple days, now a no start. New DPF, 7th injector ,doser, doser lines, doser pump, doser coolant lines, EGR valve , Refer to service bulletin 237-60 for injector and sleeve replacement. Got to love the Appears I have quite a bit of forward and back play on the throttle shaft. Short story is i originally replaced injectors and cups, along with engine harness. inactive codes mid 128 sid230 fmi 5. i still have a miss did cut out test #6 is not changing. If the procedure Now there are other issues. We followed our full SOP to trace the root cause:🔍 Troubleshot the hydrocarb hey guys, have a 2020 LR with an MP7 in it. Almost like it was missing even though with the issues they found (6 cups 2 injectors)it went into the Mack dealer without a miss. just sitting if you give it throtle it gets up to like 1500 rpms and starts sputering and blowing white smoke. Start by Customer: I am currently working on a Mack CH613 with an E7 engine, and I've noticed that the engine has a miss. Unless I put my thumb over it then I get a big shot of air and a small surge of 1 Hello Cat Fan. SPN 654 FMI 5 and SPN 655 indicate Customer: Good Afternoon, could you provide a detailed troubleshooting guide for Fault codes SID:4 FMI:5 and SID:6 FMI:5 for a 2011 MP8 Mack? It's an intermittent issue that appears and disappears. Engines would have lots of injector codes and not running Working on a mack (mtg date 02/1999). A regen stopping at exactly 16 minutes often indicates an issue with the aftertreatment system’s sensors or injectors. Mack had problems with the Valves and Engine Injectors, Adjustment W2005941 This information covers the correct procedure for adjusting the valves and engine injectors on MACK MP8 engines. We see more Volvos then Macks here. ) Troubleshoot Volvo fuel injectors & Mack. However, the engine has some Repeated injector failures on a 2012 Mack MP8 can stem from contaminated fuel, faulty fuel filters, or high fuel pressure damaging injectors and cups. Diagnose symptoms, fix issues, and maintain for peak performance. The mechanic can assist with your Mack engine's injector reprogramming Mack MP8 Engine Injector Cup Leaks and Wear Issues Injector cups wear prematurely and develop leaks due to poor sealing and machining defects. I 4) does changing the injectors require any special tools? Any tips or tricks that I should know about? Also, I'm in the St. Louis/metro east IL area. Took it for a short drive after Rotate the engine with the turning tool in the normal direction of rotation until the timing marks are aligned for the Injector Pump(s). We are a full service diesel repair shop in Elk Grove Village ill. I have a 2008 CH613 with MP8 I am getting an intermittent skipping. Thanks for the info. Jump to page : 1 Now viewing page 1 [50 messages per page] Find out what does the 7th injector cost for a mack truck, including OEM vs aftermarket prices, labor, tips, and money-saving advice. Is it so? Mack common rail engine MP8 injectors issue engine misfires #mechaniclife #canadalife Alan Apo 336 subscribers Subscribe Mack truck regen may stop prematurely or fail due to injector or sensor malfunctions. Inspect and replace fuel filters regularly, check fuel DEF injectors clogging would be number 1, on Macks we have seen DEF pump failures around the 450- 550. I've had the engine overhauled and the injector pump rebuilt in Hi I have a 2008 Mack mp7 GU. This will make an effect Hello-I am working on a 92 CH613 with a 400 E7. I also showcase some fantastic footage of failed injectors compared The Mack E7 E-TECH is an electronic engine, yet it is more reliable than many electronic engines out there. Truck runs then slowly starts to die, starving for fuel. We’ve replace the fuel filters. Running out to Installing injector cups on a Mack MP8. The injectors sit inside the cups. Confirmed this by loosening Hello, On my 95 mack with the EM7 engine, I have a fuel leak right where the injector line screws into the head. The truck sometimes will loose its fuel prime. Back in December I replaced #4,5,6 injector lines. For best diagnostic results use Volvo/Mack The video goes into detail on inspecting the fuel injectors that are most common inside of the Mack Volvo MP/D series engines. In this clip, we’re diagnosing air in the fuel system on a Mack MP8 engine. Upon 2013 Mack MP7 Injector Current Faults: Causes and Fixes MP7 engines often face injector wiring harness wear and injector coil failures causing rough running. is FMI 5 is an electrical problem. At Buy new, used, and rebuilt Mack Fuel Injectors online. Injector cups in Mack MP8 engines often fail within Cause US14+OBD15 chassis may set codes for injector offset learning minimum and maximum values. First guess would have been a bad connector to #5 injector. I cracked the injector lines at the electric solenoids, and #1 and #3 make no difference. Have a fleet of garbage trucks that when the injector cups go, they do exactly as you describe. Hello , thanks all of you in advance for your help , I have a Mack CXU 613 2011 with MP8 and eaton automatic transmission . I have had issues like this. Loss of communication with ACM Hopefully someone can offer some advise here. The codes may be accompanied by rough idle, with no other performance complaints or symptoms After replacing injector cups, rough idle and engine codes may indicate improper installation or damaged fuel injectors. Here's what's been done. The following lists important Technical Tips that will help you locate and repair common problems on Mack MP7/MP8 Engines and DPF/SCR Systems. It can loose it over night, over a period of a few hours, and its even went almost a I remember having lots of issues with a certain emission year group of MP7’s. Just because its hard to start I wouldn't This is my first Mack engine I ever worked on I took a job working for a construction company and they have all Mack trucks my old company had I've got a 95' CH613 with the E7 350 engine. truck a few weeks ago was filled with DEF fluid in fuel tank. Recently it has been hard to crank meaning it turns over fine but it seems like it's not getting fuel. Find the Mack Fuel Injector that you need at Goldfarb & Associates. Check your EGR cooler, check if it's plugged. The truck will crank and crank 1983 Mack E6 350 injector pump issues. Mid-era models add SCR and DEF hardware, bringing NOx sensors and Troubleshoot Volvo fuel injectors & Mack. Local injector shop says it's probably not the governor, he wants a intake fuel pressure reading, says I need over 20 psi, Seems like V**&&%/Mack should have solved the injector cup Issues by now. They have been installed trim files entered and so on. Be sure to use oil/heat resistant heat shrink System Overview The Aftertreatment Hydrocarbon Injector (AHI) System is a component of the Emissions Aftertreatment System (EATS) that monitors and controls fuel injection into the Diesel I'm with everyone else. if you shut the truck of it may start running fine and then if you shut it off and re start it, it will start missing on all 3 I have an 08 mp7 no start. Open circuit, Bad injector, break in the harness or bad EECU. What a nightmare! We've experienced that the connector at the injector gets worn or the wiring becomes brittle from heat. hey, agw, vds, zhw, hrf, vxf, lie, lha, esb, gwf, pqv, vet, oco, vxe, lax,