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fuel

  1. General Discussion
    I just bought a 13 lml. 155,000 miles. Test drove it all sounded great. After about 300 miles I started hearing a knock, hooked computer up and cylinder 6 balance rate was at -4.2. Changed injector same problem. The noise only comes when the truck it warm or up to temp. I can unplug injector...
  2. 06-07 LBZ & LLY Duramax Powertrain
    Hey guys, I got a 06 lbz with 248k on it. I was daily driving it and i checked the oil every 2 days and it was perfect everytime. I started driving my lb7 everyday so the lbz sat for week but the other day i decided to take it for a trip and checked the oil and it read like 2 inches past the...
  3. 11-16 LML Duramax Powertrain
    My truck has developed an issue lately and I'm really struggling to figure it out. When the truck is started it either can have a little bit of an extended start. If it doesn't just have the extended start it'll fire right up sputter down to just turning over then fire right back up again. I...
  4. 07.5-10 LMM Duramax Powertrain
    This is my first time on this forum and I need some help. I was pulling a 20ft car trailer with a 36hp tractor up a 6% grade going 65mph and my Duramax said reduced engine power and change fuel filter with a p0087 low frp code. This code keeps popping up everytime I climb this grade. My frp was...
  5. 04.5-05 LLY Duramax Powertrain
    While driving the truck I can be on throttle cruising at let's say 12k at the rail. If there's a stop sign coming up I'll let off throttle and the rail pressure will stay at the cruising pressure (12k in this example) and then start creeping up (so demanded is about 4-5k and actual will be...
  6. 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...
  7. General Discussion
    So I just replaced all 8 injectors all with new cups new high pressure lines new return line bolts. I cleaned the return lines really well. Still feel like I have some fuel in my oil and it’s smoking white after I accelerate. It’s black smoke and then white. I really need help here. Any help is...
  8. 911 Problems Forum
    So today while driving my LMM after driving about 150 miles I pull into a parking lot and the truck just died and then I try to start it back up and started to crank with the key for a couple seconds and then after that the key did nothing The primer on the fuel bowl was soft and I pushed it a...
  9. 04.5-05 LLY Duramax Powertrain
    I have a 2005 Kodiak C5500 with a Duramax (LLY). Drove it about 200 yards and it died. I could get it to restart if I continuously pumped the primer on top of the stock fuel filter. Got it home and made the following "fixes". New Fuel Filter. I have two DuraMax trucks so I have a lot of...
  10. 04.5-05 LLY Duramax Powertrain
    I’ll start this off by saying I haven’t heard this truck run yet. LLY. Doesn’t prime. I believe there’s air drawing into the fuel system. Previous owner replaced fuel tank, sending unit, fuel lines up until where they turn up at the fire wall under the cab, filter housing and has a cat filter...
  11. 01-04.5 LB7 Duramax Powertrain
    I installed a new set of injectors on my LB7 and after I put everything back together I could hear a slight knock. I ask a couple of guys and they told my that it sounds normal. I took the truck on a 150 mile trip and when i got home the knock was louder. I notice that I was getting white...
  12. 911 Problems Forum
    Please help, I cant find a mech. that knows anything. 2002 duramax will start but run out of fuel after 10 seconds. happens when truck sits for more that 2 hours and has less than 1/2 tank. The primer will get it started again and than it runs. Just had the fuel sending unit replaced. Thanks
  13. 06-07 LBZ & LLY Duramax Powertrain
    Im new to the Diesel world so any help from you guys would be great. I have a 06 duramax LLY ext cab. I was towing my trailer over the weekend about 7k-8k lbs. When i got to the races i noticed fuel dripping from under the truck. Did some research i believe that the fuel is comming from the...
  14. 01-04.5 LB7 Duramax Powertrain
    i have changed my CP3 pump and Filter can't get it to turn over fault codes are P0193, P0380, P0540,and P0090 most of the fuel lines are empty tried to start it to prime the fuel lines drained battery 3 times still no go there is no fule primer button on the filter to prime the system with...
  15. 01-04.5 LB7 Duramax Powertrain
    so the truck runs and drives just fine, but at an idle it jumps up about 200 rpm every 5-10 secconds. When I pump the top of the fuel filter, no more rough idle. put a brand new filter on thinking it could be that, no changes, pulled the bleeder valve screw and it was totally destroyed so i...
  16. 07.5-10 LMM Duramax Powertrain
    This has only happened while towing a +10,000lb trailer. Engine light will come on and the display will read "Change Fuel Filter". The truck will then go in to limp mode. I have an Evolution Programmer and I can easily erase the error code and get going again without pulling over. On a recent...
  17. 911 Problems Forum
    Hey guys, just bought a 05 with 240 kms on it about a month ago. first it would bobble (hick-up) when you started it. soon after i was having to put the pedal to the floor to start and it had to crank over longer before it would fire. i did the fuel fillter head rebuild and that hasnt helped its...
  18. 01-04.5 LB7 Duramax Powertrain
    So I got all the injectors out waiting on my new ones (suppose to be here day after tomorrow) any hints or ideas on the first steps i need to take BEFORE i try turning it over for the first time? I have a new filter on and all that jazz but how do I prime these bad boys? IM NERVOUS lol this has...
  19. General Discussion
    Hey guys i am in desperate need of a o-ring kit for my fuel filter head! I am in Edmonton, AB and wondering if anybody know where i can get the kit?? or do i have to get the kit shipped from the U.S? sounds dumb to ship 4 small o-rings. Please let me know if anybody has an idea where i can get...
  20. 04.5-05 LLY Duramax Powertrain
    I'm getting really strong raw fuel smell in the cab. I've looked all over the engine and don't see any leaks, but the smell appears to come from the engine compt. If I go to recirc mode on the ventilation, or am moving, the smell goes away. I've inspected under the hood, no signs of leak...
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