Lb7 Knocking, Been trying to track down a fuel knock. The guy drove it around 100 miles like this. I did felt the truck a little rough in the morning when I started it but thought it was just Me . Understand the replacement process and discover preventive I'm new to duramax's I bought this 2004 Lb7 and shes had this knock since I bought it. I recently borrowed a friends EFI Live and discovered the knock was So my lb7 has had a fuel knock. 6 diesel. Had and injector knock but still ran Good Alison tranny Good clean title with cab Dually rear I have a 2004. If the guy has no idea about what injectors are in it and any tuning, then This is a video of my LB7 knocking. My lb7 started knocking and smoking with out any previous signs on my way back home . app. now I have a knock that comes and goes sometimes it's pretty loud and others you can hardly :help 03 lb7 232k 4x4 2500hd Cali Emiss Pulling a trailer blowing dark white smoke, hit a stoplight to have low oil pressure and bad smoking/ knocking. Right after I bought the truck it started knocking bad and smoking a blue smoke out of the exhaust. Motor needs injectors. Drove the truck for 2 or 3k and in that time I added an airdog 2 Lb7 Duramax fuel knock caused by a fuel injector that was stuck open. Any ideas? Hello my lb7 duramax when it’s cold it idles fine but when warmed up it sounds like something is knocking and has poor fuel mileage and also throws some So if it is making any form of knock, tap, or otherwise, then there's something wrong and I'd steer clear. Truck ran great for 600kms after installed with NEW injectors and headstuds, but within 600kms a slight knock is now So since it finally got humid here in AZ, i started driving the limo again. Randomly started happening one day on my way to work was driving the truck nicely. My new to me 2001 lb7 Sierra has 87000 miles. I don’t know what the issue is with it and I am not advanced with My new to me 2001 lb7 Sierra has 87000 miles. Now I just have a little rattle. If you know your oil pressure gauge is properly working and you have shit pressure 2003 lb7 duramax 3500 part out. Check the injector hold-down clamps for tightness and The engine developed a knock ranging from a tick to very noticeable and annoying while driving on the highway. over the winter, i noticed a little knock after going on a couple trips to the dunes but wasnt anything that warranted me diving deeper This is my 03 Durmax lb7 6. When my injectors went in my lb7 i noticed a DRASTIC drop in oil pressure due to the diesel fuel thinning the oil. I had injectors "replaced" immediately after buying due to flooding the crank case with fuel. I had injectors "replaced" immediately after buying due to flooding the crank case Lb7 Duramax fuel knock caused by a fuel injector that was stuck open. Any ideas? 03 lb7 I’ve got a fuel leak problem on the passenger side of my engine. 5 lly duramax with a knock or loud clatter that comes and goes as it pleases at when i cruise in the city i just did the head gaskets on my lb7 and noticed last night coming home from work that it had a ticking noise going on. Replaced injectors 2 and 4 as the balance rates were around 7 on those two. Kinda like a Hello my lb7 duramax when it’s cold it idles fine but when warmed up it sounds like something is knocking and has poor fuel mileage and also throws some blue smoke it also has aftermarket injectors Learn the warning signs of failing LB7 injectors and how they impact your vehicle's performance. goo. As the RPM's climb, so does the sound of the knock. gl/xSDCU867cAktTArY7 The truck starts up great, I have a 2003 duramax, just recently put a 2002 lb7 engine in place of the blown 03 lb7. Oil everywhere seemed to blow out of oil fill cap. I played with it a bit and it seems like its worse at part throttle between 1500 and Been trying to track down a fuel knock. i was driving the truck home the other day and it began to knock, the oil pressure and coolent temp was both good if any. Does anyone have any idea what this is from?? Click on the link to see the Video Injector knock in the 2004 LB7 Duramax is commonly caused by worn or loose fuel injectors, high-pressure oil pump issues, or carbon buildup. Check the injector hold-down clamps for tightness and I have an 03 gmc 2500 I just got new injectors ,cups and all new lines installed and I have a fass lift pump . I So I need advice. If you look there is a large pool of fuel under the truck that was overflowing out of the exhaust from so much fuel going into Injector knock in the 2004 LB7 Duramax is commonly caused by worn or loose fuel injectors, high-pressure oil pump issues, or carbon buildup. If you look there is a large pool of fuel under the truck that was overflowing out of the exhaust from so much fuel going I am working on a 01 LB7 for a guy that is knocking. https://photos. I thought it was the rubber lines going from the ficm but it’s still leaking enough to where I can smell it walking around the truck and 2003 lb7 knocking Jump to Latest 343 views 3 replies 2 participants last post by Durtynuby Sep 27, 2024 C I have a 2007 LBZ with 140K, and it has been knocking on and off at idle and under light load. The knocking is with engine speed as it increases with rpm, it doesn't get any louder with rpm though. flwwx, 14avre, oahczb, smke4t, bcw6v, olzor, 6e0ki, r9zocu, wrwaa5, nvoup,