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injectors
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  1. Introductions
    I changed the injectors all out and cleaned the fuel line. Now the truck will turn over but not start. I loosed the fuel line on the fuel rail on the passenger side closest to the firewall but cannot fuel to come out. I have an AirDog lift pump and it is whirling like normal. I do have fuel at...
  2. Introductions
    Alright, another lb7 injector question. I have a 2002 Chevy Silverado 2500hd with the lb7 Duramax and 130,000 thousand miles. Once it’s warmed up it knocks at idle I had the man at Autozone plug his Snap-on into it and check my balance rates. In park number 1 was running 9 to 10, number seven -4...
  3. 01-04.5 LB7 Duramax Powertrain
    Hey guys. I just installed new injectors on my 2003 LB7. I was not aware until after putting everything back together that you want to purge the cylinder heads of anything non combustible as to prevent hydro locking. Am I able to still do this with the injectors installed? Can I just pull the...
  4. 01-04.5 LB7 Duramax Powertrain
    Sup guys I have an 02 Lb7 with a new motor and a couple mods, pretty reliable rig. Recently I have been seeing balance rate fluctuations on my injectors that make no sense. I keep a close eye on injector #8. Throughout the day, I’ll see My injector climb all the way to +15 while in park, and...
  5. 07.5-10 LMM Duramax Powertrain
    So I ordered a full set of Bosch factory "new" injectors, not rebuilt. When they came they were wrapped in bubble wrap with Injectorsdirect.com tape on them. No Bosch packaging at all. It just seems odd that they wouldn't be in Bosch packaging. Is there any way you would visually be able to tell...
  6. General Discussion
    Just got done replacing my fuel injectors in my 2009 GMC duramax, I haven't found much info on this job so I thought id start a thread if anyone needs tips. I can post basic steps upon request, but I wanted to recommend a few things that I learned as I went. Cleanliness is key, wash, blow air...
  7. Introductions
    just recently copped my dream truck I absolutely love it and I find joy in learning more about diesels. Here’s what I know is done to it from a performance stand point: almost everything on replaced but too much to list Brand new 6.6 Jasper Duramax Motor (ARP studs) -Upgraded Crank Shaft -Built...
  8. Introductions
    Hello Forum. I've been a member for a few years, but have used this forum a lot since buying my LLY in 2011..This is my first post... You guys have helped me fix some things my self or at least helped me be able to discuss intelligently with "experts." There aren't many diesel mechanics in my...
  9. General Discussion
    Hi! I hope this is posted in the right section 😬 I have an 02 duramax LB7 (chev 2500HD) that I am DOWN THE RABBIT HOLE on. She started white smoking so I had all new injectors done, thermostat, fuel lines, injector pump, replaced a cracked air intake hose, the lift pump(custom system added), and...
  10. 06-07 LBZ & LLY Duramax Powertrain
    New to the forum and hoping to shed some light on an issue I’ve been having. for a while now I’ve been experiencing an uncomfortably loud ticking sound coming from my drivers side of my engine after replacing my injectors about 6 months ago. There are roughly 5000 miles on the new injectors and...
  11. Performance Upgrades
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  12. Drivetrain
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  13. 01-04.5 LB7 Performance Parts Discussion
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  14. 911 Problems Forum
    Got a LB7 bought refurbished injectors from injectorsdirect.com last weekend got on the truck hard one time and now I have a fuel knock on cylinder number 7 I know this because I took my scanner and commanded each injector off and when I got to number 7 the knock went away has anyone bought...
  15. 07.5-10 LMM Duramax Powertrain
    Whenever I climb grades my pickup goes into limp mode from low frp. I have rebuilt my fuel filter housing, race plug and replaced a rubber feed line. I do have a Fass 165 also. The actual frp is 22k to 23k max while the dfrp is 26k. 2008 LMM 179,000 miles. Bad injectors or bad cp3?
  16. 01-04.5 LB7 Duramax Powertrain
    So I just picked up an lb7 with 158,000 miles on it one owner truck , drove it 2 hours and it drove perfect no check engine or anything , when I first checked the truck I drove it got it warm and check the blowby at the oil cap and it was a small haze it seem normal , when I got home doing...
  17. 01-04.5 LB7 Duramax Powertrain
    Hello! I am new here and have been loving the amount of information available on this site. I have owned a 2002 Silverado 2500HD LB7 for about a year. The truck is stock and has 470,000 kms (292,000 miles) on it. Mostly highway miles as these were retiree snowbirds. I have been having trouble...
  18. 01-04.5 LB7 Duramax Powertrain
    I just recently bought my first Duramax a 2003 LB7 with 245K miles, I knowingly bought it with bad injectors as that's one of the weak points and I had a well known diesel shop install Some Bosh reman injectors and fuel lines as well as a fass fuel pump/sump and fuel bowl delete. It hasn't...
  19. 911 Problems Forum
    Hi, I have had high injector balance rates right after driving before 1# -.2 #2 1.9 #3 1.2 #4 -1.1 #5 -.7 #6 1.2 #7 -.9 #8 -.9 after #1 -3.9 #2 5.6 #3 5.3 #4 -2.0 #5 .2 #6 3.9 #7 -5.9 #8 -3.3 in park I decided to do injector cleaning with 10-3015 half can with .5 gallons of diesel right during...
  20. 01-04.5 LB7 Duramax Powertrain
    Hey there fellas I’m pretty new to the Duramax gang and need some guidance before I throw any more money at the wrong issues. I recently purchased a used CA 2002 Chevy 2500 short bed crew cab 4WD with 180,000 miles from a local dealership and didn’t have any problems when I was test driving...
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