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  1. Over

    M923 nhc250 replaced injector pump still no joy!

    Understand! Wish this thread was up when my Gremlins started showing up. The world needs test dummies and I got elected to this one, lol!
  2. Over

    M923 nhc250 replaced injector pump still no joy!

    Your videos are a great help! Need to go thru some I saw that addresses other issues I have on the trucks. Shortens the learning curve! Thanks again!
  3. Over

    M923 nhc250 replaced injector pump still no joy!

    Yes that's what I figured. My throttle pedal was sticking down a ways and seemed like to much diesel got to the cylinders so it just smoked. Throttle is sticking in that area right where you cant see it under the cab. A year sitting and I believe the diesel just gummed up on the injectors...
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    M923 nhc250 replaced injector pump still no joy!

    FINALLY GOT HER GOING!!! Appreciate all the help here and special shout out to Wess and his videos! Noticed when I pinched the return line it tried but no go. Then I noticed the rubber return line was leaking at the first joint due to the hose being old and brittle. Went and set up a fuel line...
  5. Over

    M923 nhc250 replaced injector pump still no joy!

    Used more Starting Fluid than I care to think about. When the rain comes and goes I'll jump on top and check the cam then pull the injectors. 15 minute job, right?
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    M923 nhc250 replaced injector pump still no joy!

    Hi Wes So I should hear the injectors clicking (firing) when the compress the diesel?
  7. Over

    M923 nhc250 replaced injector pump still no joy!

    Thanks for the info!! Trying to decide if it's the injectors or pump. Don't think all the injectors could go south at the same time plus when I pinched off the return line I got smoke but no fire so I think the injectors are trying. I may end up popping the injectors out to see if crap got in...
  8. Over

    M923 nhc250 replaced injector pump still no joy!

    The bypass (Probably wrong name) would be the one valve at the end of the hard return line from the head.
  9. Over

    M923 nhc250 replaced injector pump still no joy!

    Hi...I checked the line before and after the fuel bypass valve. Tried at the head but couldn't get even the line wrench in there. So went downstream on the same steel line and disconnected at the bypass. Should be same result. I got a mild dribble out of there. This is baffling me but these...
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    M923 nhc250 replaced injector pump still no joy!

    Great video that I watched early on in December. Always good to know the basics. Just pinched the return line and it tried, no fire but could smell diesel smoke. Batts are low so will try tomorrow. It's a mystery to me as I find it hard that all injectors went bad from sitting. I did have the...
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    M923 nhc250 replaced injector pump still no joy!

    Hi..Sorry just saw the reply. For some reason SS isn't notifying me of reply's. Anyhow been screwing with this issue for a couple of weekends. I put a fuel pressure gauge on the pump above the solenoid and when hit with starter fluid it read 40 lbs. Fuel is flowing as I disconnected the fuel...
  12. Over

    M923 nhc250 replaced injector pump still no joy!

    Time to call it quits tonight, tomorrow starts another work week. Thanks for the help! Will throw a pressure gauge on the pump next before diving into injector problems. Thanks Again!!!
  13. Over

    M923 nhc250 replaced injector pump still no joy!

    Yeah that's what I'm afraid of. Have a pile of cans laying around empty at this point.
  14. Over

    M923 nhc250 replaced injector pump still no joy!

    Yes it has power to the solenoid, plus it's the same as when I pulled it of the other truck that ran fine. I'm freakin stumped. I'm going to run a continuous pressure on the tank and try starting that way. Should rule out air leaks even though when pressurized I see no leaks. So far 3 days of...
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    M923 nhc250 replaced injector pump still no joy!

    Hi...Went out and loosened that line and started with starter fluid. It wet the side of the motor, no soldier B to film. Went thru another can trying to start, no go. Could all 6 of the injector took a dump from sitting a year? Never heard of that but I'm stumped. The filter canister is full and...
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    M923 nhc250 replaced injector pump still no joy!

    Hi..Like your videos by the way. I used your PT pump install for reference! No I have the other pumps shutoff which is good. I just stepped back in after pulling the line on top and in turning over it bubbled up maybe 1" so diesel is getting to the line. Whats an easy way to check that its...
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    M923 nhc250 replaced injector pump still no joy!

    I also noted when I pulled the pump that the shaft on the air compressor rotated when starting.
  18. Over

    M923 nhc250 replaced injector pump still no joy!

    I have a M923A0 that I used to haul water. Slowly last year it needed a bump in throttle to keep idling at lights. It slowly got worse then I parked it. This year I pulled the fuel filter which had crap in it. Cleaned it all up, new filter, new line from tank to injector pump but still wouldn't...
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