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1-12 of 12 Results
  1. 911 Problems Forum
    While I was cleaning the air filter I thoroughly detailed the engine bay. I covered both batteries and the alternator before I pre-rinsed with garden hose pressure, then applied engine cleaner to let soak 15 minutes. After the final rinse I used compressed air to dry every part thoroughly. I...
  2. 07.5-10 LMM Duramax Powertrain
    Hey guys. I'm new to this forum but not new to duramax issues unfortunately. So about 2 weeks ago I put new big injectors into my LMM. I have not been able to get it to fire up since. I have an engine starter on the battery and it will sit there and crank with no fire forever. I've replaced...
  3. 911 Problems Forum
    2011 duramax. Egr and fuel filter delete( filter head removed) fass 165 lift pump 3 inch down pipe lb7 up pipe h&s mini max pcv reroute. I just replaced headgaskets and lower oil pan gasket. Cranked over with no glow plugs to try and prime up oil before actually running at idle speeds. Installed...
  4. 01-04.5 LB7 Duramax Powertrain
    Have 03 GMC 2500hd Duramax 107k miles. Crank no start. Removed factory fiuel filter and pump. Installed FASS lift pump and filters. Shows only 500 lb. Fuel pressure at cranking. Will start with either and runs fine. Have replaced: Truck cranks but won't start. Fuel pressure is only...
  5. 01-04.5 LB7 Duramax Powertrain
    I attached a line to my return line off of the cp3 and capped off where the line would have plugged into. Also disabled the lift pump and this is all the fuel I get after 15 seconds of cranking. I did this 2 times with the same results.
  6. 01-04.5 LB7 Duramax Powertrain
    Does anybody happen to have any wire diagrams for the 6.6 Duramax? I have a 2001 that just cannot get to start. I popped the fuse box cover off and started to look at wires and noticed a few had some cuts in them I am going to fix them. I am just trying to figure out what wire does what. Code...
  7. 06-07 LBZ & LLY Duramax Powertrain
    Bought an 06 Topkick C4500 with LBZ motor in a non-running condition. Truck has less than 100K on it. Batteries had been disconnected so no codes. Rebuilt primer and it pumps up good, FRP 9k while cranking. It hits a little while cranking. Where to go from here? Anyone one have a trouble...
  8. 911 Problems Forum
    Hey everyone new to the forum, Recently purchased 2nd duramax (04 LB7 with 146k, Cali truck) after owning a lbz previously. Having issues starting. Truck sat for about 4 years in my brothers truck yard but ran great beforehand. Fired right up first day we pulled it out but now seems to have a...
  9. 01-04.5 LB7 Duramax Powertrain
    I've got an 04' silverado with a vin 1 lb7 and once every couple months it will crank but not fire no matter how long you crank. I replaced the primer pump, fuel lines and fuel filter. It changed nothing. I can prime it up tight with no air and as soon as I crank it I lose the prime. I can prime...
  10. 04.5-05 LLY Duramax Powertrain
    Hi guys, I started my truck , a 2005 2500HD Duramax LLY to warm it up after a few days. It started right up with no hesitation. I went to get in after a few minutes and it died. I cranked but it wouldn't start. and it's been 5 days now. Here's the list of things I checked and I know: 1...
  11. 06-07 LBZ & LLY Duramax Powertrain
    Current issue is my 03 Sierra sounds like its cranking strong but will never fire up. I had both batteries tested at the local parts stores and they tested good. I figured since the batteries tested good and wouldn't hold a charge it may be the alternator. It looked easy enough to get off so I...
  12. 01-04.5 LB7 Duramax Powertrain
    Let me start with saying I don't know much about diesel engines or trucks to begin with so thanks for the help ( I definitely cannot afford one of the many high dollar shops in my area since both the wifey and I are laid off due to the Coronavirus bullshit going around)! My 03 gmc 2500 duramax...
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