lb7 crank no start

  1. R

    01 Lb7 crank no start

    Got a 01 durmax in the shop for a crank no start, its got a new filter head, new cp3, new injectors within the last 10k miles and a new frp sensor, we have bled the system and nothing, the frp is desiring 42-45 mpa and the actual is stuck at 2 unless you unplug it which makes it around 180mpa...
  2. R

    Lb7 crank no start 6k rail pressure

    Hello have used this site in the past but first time poster. I’ve browsed for hours and can’t figure a next step to trouble shoot my truck( 04 lb7). Encountering a crank no start I have 6k rail pressure while cranking, used a test light to determine I’m getting injector pulse. All fuel related...
    • rmcelhany
    • Thread
    • lb7 crank no start
    • Replies: 18
    • Forum: LB7
  3. L

    Crank no start no codes

    Bought an old farm truck from a guy in Missouri. Was supposed to be running when parked. Started out not building rail pressure. Did a bottle test and nothing significant came from that. Replaced the Cp3 with a good used one (took it off a truck personally). I’m able to build rail pressure now...
    • landon7320
    • Thread
    • lb7 crank no start
    • Replies: 2
    • Forum: LB7
  4. N

    2001 LB7 Question crank no start Question

    Decided to restore my dads old 2001 LB7 , its been sitting for a while. For trying to start this truck, i am by-passing the fuel tank and i have a lift pump under the hood with a yellow fuel tank and have the return going in there also ( from the quick connection under the hood ). i got Torque...
    • Nixxk
    • Thread
    • lb7 crank no start
    • Replies: 7
    • Forum: LB7
  5. robstu85

    Bought LB7 04/13. Won't start 04/16.

    Bought my first diesel 04/13 and thought I got a true gem; a 1 owner 2003 2500 LB7 with 76k miles from an 85 year old man. 3 days later I can't get it to start. Some background. When I went to show my dad the truck before I bought it, it started for 3 seconds then died. Owner said could be...
    • robstu85
    • Thread
    • lb7 lb7 crank no start lb7 diagnostic lb7 duramax
    • Replies: 23
    • Forum: LB7
  6. J

    Lb7 crank no start after motor swap

    I have a 2001 lb7 duramax I just did a motor swap in I got a crank no start it had the original motor but I swapped too a lb7 Cali emission motor unfortunately but now it don’t seem to want too start the motor prior had 100 overs apparently and a tune could that be blocking it from wanting too...
    • Jcdavis0444
    • Thread
    • lb7 crank no start lb7 diagnostic lb7 duramax lb7 injectors hard start
    • Replies: 5
    • Forum: LB7
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