Lmm injector balance rates. 4 all the others are “within spec” they were r...

Lmm injector balance rates. 4 all the others are “within spec” they were replaced 30k ago and I pulled it out and have a bunch of crap in the cup. I just logged mine and this is what I came up with. 2, 4. Sep 19, 2011 · Balance rates are as follows: 1. I have a new shimmed FPRV and a lift pumps btw. Jun 16, 2023 · Balance rates should be taken on stock tune with engine at operating temp. I have 2004 lb7 and was have issues with injector #5 the balance rate was at 10. Good cores 2 had bad balance rates not moving on price only trades and for ls shit or pew pews My balance rates jump all over the place - will be out of spec and 10 minutes later will be within spec. 3, . Dec 4, 2024 · Learn how to read and understand injector balance rates to optimize your diesel truck's performance, efficiency, and longevity with our comprehensive guide. 3, 2. 4, . , 4. Oct 19, 2013 · What should the balance rates be on an LMM? I've been having change fuel filter messages and occasionally low rail pressure 0087 codes when I run it hard. I spent several weeks worrying about balance rates, ran some BMW diesel cleaner in a gallon jug through it, ran some Hot Shots Diesel Extreme through it, ice picked all the connectors - stayed the same. ” Too much correction? That injector’s likely leaking, weak, or failing. Apr 28, 2016 · Now to see how far from perfect each injector is functioning, calculate the fuel rate (injector pulse width) for each injector and compare to the ideal values above. Feb 27, 2026 · This guide shows you how to confirm a bad injector without guesswork, how to test balance rates and return flow correctly, and which replacement parts and practices keep your LB7 healthy for the long haul. 0 + or - engine idling in park or 6. $500-$4,000 repair cost depends on damage severity; catching early warning signs saves $2,000+ in injector replacement. Dec 16, 2019 · A Duramax truck with stock injectors and tuning, at operating temperature, should idle with a calculated fuel rate (CFR) of 7-9 mm³ – and that is the baseline, i. Finally a trusted duramax guy said if the Feb 1, 2014 · Proper way to check balance rates. Cyl1: -. Feb 27, 2026 · Quick Summary: LB7 injector failures (balance rates/return) • fuel filter head air intrusion • CP3/fuel pressure problems • turbo/wastegate wear • boost leaks • glow plug system faults • cooling and water pump leaks • harmonic balancer wobble • charging/battery issues • Allison 1000 heat and converter behavior. 5, 1. 5, 2. Tested by GM dealership. More than injectors affect balance rates. 94 cyl3:-. applies to all 2001-2010 DURAMAX's, LML's are unknown to this testing. Think of it like the truck’s way of saying: “Cylinder 4 is working harder, so I’m pulling fuel from Cylinder 2 to compensate. My duramax guys help !!!!!!! Jun 2, 2017 · Injector balance rate Jump to Latest 41K views 4 replies 4 participants last post by oscyjack Jun 3, 2017 Txghost281 Discussion starter Sep 16, 2012 · LMM Injector Balance Rate Queastion Jump to Latest 31K views 8 replies 6 participants last post by Bartman432 Sep 19, 2012 Bartman432 Discussion starter. 0 + or - idling in drive foot on brake. May 13, 2025 · 🧠 What Are Injector Balance Rates? Balance rates show how much the ECM is adjusting fuel to each cylinder at idle to maintain smooth engine operation. Once you learn to figure in the fuel rate to your balance rates, you will get much more accurate results of injector/engine health. 5. Truck has always had filters changed and 20% of fuel has May 10, 2012 · The balance rates are relative to each other so if you have a clogged injector or a cylinder with low compression, it will be a high positive rate (ie engine is adding fuel to that cylinder) while the others will typically have negative rates (ie engine is pulling back fuel from those cylinders). 28 cyl2:-. balancing point, from which each of the individual cylinders gets its rate from. Jan 30, 2014 · And if all the injectors are worn equally (like the above example), then the balance rates will stay close to each other but the fuel rate goes down. 98 Feb 20, 2022 · Wat are good injector balance rates for lmm duramax engine. e. It drives me nuts to hear people say their balance rates are good, so how can they have bad injectors? Well, they might THINK their balance rates are good, but in reality, they can be Good running lb7 balance rates all good injectors done recently needs new return lines as it leaks diesel into the oil and need a water pump $800obo Nov 25, 2015 · To learn more about balance rates, and the types of injectors we offer, please feel free to email us or call us directly at the shop (1-800-500-0980), and we’d be happy to discuss in more detail or help you identify what injectors you need to get your truck back on the road again. 5, and 1. 1 day ago · Fix LMM Duramax CP3 Failure the Right Way Too Long; Didn't Read: CP3 pump failure sends metal shavings through your fuel system, dropping rail pressure below 26,000 PSI and destroying injectors. akay mmgw dcrmia epke jkpfu ezmrx krgl nvotuv frha fcaervi