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  1. duramax on fire

    Help. Proper injector cup install.

    Red loctite is the strongest of all the colors.
  2. duramax on fire

    Help. Proper injector cup install.

    Be sure to leave those injectors torqued down for a day also. Let the loctite dry
  3. duramax on fire

    first time injectors suggestions

    That sucks about the bolt. I think we did mine in 6 hours. That was with a buddy on one side and me on the other. And no cups pulled out
  4. duramax on fire

    first time injectors suggestions

    Can you weld a Allen head socket to the stripped bolt. Or get some vise grips on it. Pulling the motor for one bolt would suck. Did my injectors for the first time this year. No big deal. If I remeber right on the injector hold down bolt some were saying to over torque 10 lbs
  5. duramax on fire

    LB7: Injector issues

    Try some of the two stroke oil. Can't hurt
  6. duramax on fire

    LB7: Injector issues

    Could it be the fpr sticking maybe. Mine started smoking at idle I put some two stroke oil in it and it cleared it up. Hasn't smoked since.
  7. duramax on fire

    2004 lb7 help!!!!!!

    I'm with him. You have already thrown a lot of parts at it. Might as well put a ficm on it
  8. duramax on fire

    Coolant in oil

    I'm still thinking it was the water pump. Did you reseal the cups
  9. duramax on fire

    LB7: Bad Injectors... Maybe... Thoughts?

    Lift pump is a must in my opion. But no need to spend big bucks. I simply added an inline low pressure fuel pump. Also added a cat pre filter. Then ran a Baldwin filter on the factory filter.
  10. duramax on fire

    Coolant in oil

    Well it sucks when you can't pin point a problem. Are you going to reseal all the cups? Sometimes a crack only shows when it's heated up. Let us know if you find the problem. I would throw it back together and see what happens. But I usually do things the hard way
  11. duramax on fire

    Coolant in oil

    Mine did the same thing. Would hold untill it ran. Did the water pump bearing have any play at all? Just currious.
  12. duramax on fire

    How much longer will this cylinder last.

    10k miles later and still making 400 lbs on bad cylinder. Half of those are pulling travel trailer. I'll post back if it ever blows.
  13. duramax on fire

    Coolant in oil

    No the hole being plugged wasn't noticeable untill I pulled the pump. Dirt dobbbers clogged mine up. Did a good job of it. At 320 it needs to be changed anyways. After mine was off you could feel the play in the bearing. I bought the truck drove in home (2 hours) and had to add coolant. Used a...
  14. duramax on fire

    Coolant in oil

    It was a hard lesson learned. I would pressure the coolant system and never lost pressure. But was loosing a lot of coolant in the oil. So I pulled the heads to have them checked. While I had the truck tore down that far I decided to change the 200k water pump. And that's when I found the...
  15. duramax on fire

    Coolant in oil

    I like to reseal the cups anyways. But if none of the cups pull out, pressure up your coolant system and see if any of the cups are leaking. You can spray soapy water around the cups and look for air bubbles.
  16. duramax on fire

    Coolant in oil

    Mine was doing the same thing as yours. Water pump weep holes were plugged up forcing the coolant into the motor.
  17. duramax on fire

    Assembling motor. Need answers!!

    It's not rocket science. With Google and YouTube people can do just about anything.
  18. duramax on fire

    LB7: Head Gasket Repair Time

    Do you have a two post lift? I pulled my cab and front end in 1 1/2 hours. Never done it before. Made life easy and saved my back. Also water pump is easy to do while you have it tore down that far. I just use a 600lb impact on the harmonic balancer bolt
  19. duramax on fire

    LB7: Replace Head Gaskets

    I did mine with out any diesel knowledge but like you have done a lot of gas stuff. These lb7s are pretty simple once you get in there and mess with them. I did pull the cab but I have a two post lift. Only took two hours to pull the cab. And probably saved me 6 hours and a sore back. When you...
  20. duramax on fire

    Lb7 oil

    Mine only has between the first and second white line oil pressure when hot idle. 60 cold So around 7 psi according to gauge at idle hot
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