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  1. juddski88

    LLY new engine won’t start.

    Man a scope is so cheap, pick up a used modis or a used fluke for a couple hundred bones
  2. juddski88

    LLY new engine won’t start.

    Does it have good compression?
  3. juddski88

    Low maf reading

    Glad you got it figured out!
  4. juddski88

    Low maf reading

    I see that. Shouldn't the "signal" from the ECM be 5v? I understand that the ECU raw data measured is hz, but if the voltage or the amperes is not correct, I would bet that has a direct effect on frequency Correct me if I'm wrong please, but isn't this the type of MAF sensor the lmm and newer...
  5. juddski88

    Low maf reading

    If you got 12v on your 5v reference circuit, I'd figure that out first
  6. juddski88

    Low maf reading

    What was the voltage on the 5v circuit?
  7. juddski88

    Low maf reading

    See if this helps
  8. juddski88

    Low maf reading

    Check voltage on the 5v ref circuit at the maf connector
  9. juddski88

    Updated/Current Oval Piston Roll Call!

    I appreciate your info gentlemen. How loose are you talking Mark? PTV and PTH.
  10. juddski88

    Updated/Current Oval Piston Roll Call!

    So the surface area being discussed is just the surface area inside the bowl, correct? And Jon, from a piston reliability standpoint in general, a higher Delta T is not optimal, correct?
  11. juddski88

    Updated/Current Oval Piston Roll Call!

    That's an interesting take on it Mark. I'm trying to wrap my head around the less surface area part of that, but I can definitely envision the difference in swirl. It would be fun to machine a PC model and run some smoke through it.
  12. juddski88

    Updated/Current Oval Piston Roll Call!

    The bigger the injector and closer to tdc you can inject with less duration, the more efficient these pistons will be. Just like any of the other pistons, but with less margin for error, in my opinion.
  13. juddski88

    L5p p1089

    I would look at the commanded vs actual reg current on the fuel pressure regulator(s). See if either is bouncing also
  14. juddski88

    LB7 $0544 when attempting to activate license

    I had that happen a few months ago with a 2004.5 OS, truck had a bully dog programmer and the file had been flashed over with either EFI or HP to hide some codes by a truck dealer in CT that is notorious for this type of thing. I loaded a TIS file in and all was well after that. Serial numbers...
  15. juddski88

    lmm fuel knock misfire

    bringing this thread back up, mamu, did you find a broken crank?
  16. juddski88

    Strange noise at idle in gear

    Kind of like converter chatter?
  17. juddski88

    Harmonic Damper

    I would have to say that if you are basing this comparison all on old data provided by Guy, then it is not a fair comparison, nor is it fact as you present it. Not only are there newer revisions of the Fluidamper products, but the Majority of diesel engines produced throughout history utilize...
  18. juddski88

    Van failed emissions - P0098 intake air temperature sensor 2 circuit high

    I would recommend getting another diagnosis done by someone more familiar with the Duramax. Seems too coincidental for the problem to show up while plugged in.
  19. juddski88

    Electric Hummer...

    Not all EV motors are that way, some older ones had external encoders and now they are incorporating them into the bearing assembly.
  20. juddski88

    LMM sluggish/smokey once hot at 2000rpm

    I don't think anyone suggested it was a tune problem?
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