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  1. Bigturba

    2005 lly crank no start after sitting a month

    Well I’m guessing it is my cp3, have done all the testing and while the truck is cranking over it only has 300psi rail pressure and they need atleast 1500psi. With the truck having a reman 10mm cp3 I think it may have been weak and that once it dried out it failed the cp3. Bought a new 10mm cp3...
  2. Bigturba

    2005 lly crank no start after sitting a month

    Yeah that’s why I don’t wanna do it if I don’t have to!
  3. Bigturba

    2005 lly crank no start after sitting a month

    Did not remove the cp3 gear, and is there anything better then starting fluid that I could run it on that won’t hurt the motor or have a chance of running away lol?
  4. Bigturba

    2005 lly crank no start after sitting a month

    Found a leak at one line coming out of the cp3 Return but that has been fixed otherwise all others look good. The dirty fuel supply line I got had a oil residue in it and what looks to be dirt or small rubber bits. It was a brand new line so never thought anything to look inside it until I...
  5. Bigturba

    2005 lly crank no start after sitting a month

    Yes motor ran before I tore it apart. Seemed to have a fuel knock at mid rpm when engine was cold but would go away once it was warm and had a lope at idle once engine was warm. Hooked my snap on scanner to it and looked at the injector commands and number 4 was not reading when it was warm But...
  6. Bigturba

    2005 lly crank no start after sitting a month

    Also checked grounds on passenger side of block and cleaned those, cleaned and check grounds under driver door on frame rail. And checked ground on driver side of block. They all look good.
  7. Bigturba

    2005 lly crank no start after sitting a month

    I left the pump running with fuel coming out of the line when I re hooked it up made quite the mess but I knew forsure there was no air up to that point. When I unplugged the fpr it called for 100% but rail pressure was still only 300 psi at cranking. If I unplugged the fuel rail erasure sensor...
  8. Bigturba

    2005 lly crank no start after sitting a month

    Truck has a lift pump, I pulled supply off and let fuel run threw until there was no air, after new harness a fpr was installed I did try to unplug it and start but same crank no start but I did not check fuel rail pressure with it unplugged I will try that again and report back what it reads...
  9. Bigturba

    2005 lly crank no start after sitting a month

    Wonder why It wouldn’t post the attachment. Still showing code p0090 and a lot of BCM codes and also the u1301 codes for the Data link. Are you talking about the supply line or cracking the high pressure line feeding the rail?
  10. Bigturba

    2005 lly crank no start after sitting a month

    Hey guys new to the page but not a duramax! Already had 5 with lots of good power but this is the first with a crank no start. So here we go, have a 2005 lly that I bought about 2 months ago. Prior to buying it the truck would have a lope at idle after being warm, injector 4 would not read a...