Lbz injector knock. 8-5. It has a bad injector balance rate of +12 on injector 3 all the other injectors I believe are in spec. 06-07 6. It only happens at low RPMs and speeds of 15-35. Nov 18, 2012 · Replaced #5 with old one, balance rates got worse all around and still knocked, unplugged #8 and knock stopped, plugged back in, #3 and #8 balance rates became -12 and +12 respectively? Has anyone figured out which injectors correspond directly to each other and affect each others flow? Mar 6, 2011 · OK the other day out of the blue the engine developed a loud knock. It throws a code p0303 and I think that's about it. Use clear 1 gallon container with your preferred anti carbon injection cleaner. Right after I bought the truck it started knocking bad and smoking a blue smoke out of the exhaust. personally I'd never run atf in my fuel system even though others do it, also leary on 2 stroke oil. Pulled the truck into a Jan 5, 2017 · Hi guys, so I have a 07 LBZ 145k miles. A slight knock can start occurring due to injector problems, often after a contaminated fuel problem. 6L LBZ Duramax Bosch Stock reman Injector Don't be fooled by knock-offs, cheap imitations, or junk remans, these are Genuine Bosch injectors . 04. Only once out of a dozen or more tries have I gotten it to even respond when I shut an injector off. 1 except for #3 it's 4. 6L LBZ Duramax Bosch Stock reman Injector Don't be fooled by knock-offs, cheap imitations, or junk remans, these are Genuine Bosch injectors with a 12 month, unlimited mile warranty! This is a 2006-2007 LBZ Duramax Diesel Bosch Fuel Injector, that has been remanufactured by the same compan. Or, at enough speed to put out much power, like 50+, it is OK. Kinda like a LB7 does with bad injectors. Use cap off tools to block off one injector at a time. He was driving it easy and started making noise and idling really rough and shaking the engine. Something else that will create a knock is a clogged fuel filter but you would notice a power drop with the motor most likely into limp mode. Nov 1, 2024 · But who want to re-do LB7 injectors umpteen times until they find 8 good ones? That is if, in fact, they are the problem. Jan 28, 2024 · I can go down the street and buy a set of reman Bosch injectors from a well known diesel supplier that services the US and they will pass on a bosch test stand but will cause smoke issues, knocking or won’t last. 6L LBZ Duramax Bosch Stock reman Injector Don't be fooled by knock-offs, cheap imitations, or junk remans, these are Genuine Bosch injectors with a 12 month, unlimited mile warranty! This is a 2006-2007 LBZ Duramax Diesel Bosch Fuel Injector, that has been remanufactured by the same company who built it new, Bosch. 4-1. 2 any ideas why it's loud cold and perfect warmed up? Apr 7, 2015 · I have an LBZ with a very loud knock, almost sounds like it is a knock and backfire through the air filter. 6L LLY Duramax Stock Replacement Bosch Reman Injector Don't be fooled by knock-offs, cheap imitations, or remans these are Genuine Bosch . If you want to run treatment in the fuel system buy a purpose developed diesel fuel additive. And, it only does it at low load under certain conditions. Dec 23, 2016 · Injector balance rates outside of +4 to -6. When I start it cold it has a loud injector knock on pass side, Balance rates are 0. 5-05 6. If I'm on the gas accelerating, it sounds normal. Find video that shows how to isolate fuel intake and return lines at 'quick' disconnects by glow plug relay assembly. Any ideas what it might be sounds like the very common duramax injector knock. So I pulled over to check things out and my tick quickly turned into a faint knock. 6L LBZ Duramax Bosch Reman Stock Replacement Injector 06-07 6. Sep 1, 2019 · Also had an injector start knocking so loud, you would think it had thrown a rod. Fuel burns late causing knock. Drove a half mile and I noticed a small tick. Feb 21, 2019 · A friends LBZ started knocking today (2006 with about 260K miles). 2-2. Does not happen during acceleration or Oct 23, 2009 · I have a 2007 LBZ with 140K, and it has been knocking on and off at idle and under light load. 06-07 GM 6. Oil level was good and there was no blowby so I added a Aug 4, 2014 · Cruising around town last friday night in my LBZ, lined up at a stoplight with a kid in a LB7, did a small 15-40 mph roll on the 125hp tune. 2. Jan 13, 2025 · Knock caused because injection is not atomized at idle'drippy'. 9 indicate a problem with that cylinder or injector. It didn't happen while driving it happened immediately after restarting from a trip to the store which was about 40 mins on the highway. . Nov 18, 2012 · I tried to use DVT functions to shut off each injector while it is knocking, but I have not gotten it to work properly. The knock goes away after 3 minutes of idling and when it warms up its 0.