12.7 detroit smoking and rattling

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 4noReason, Jun 15, 2022.

  1. Rideandrepair

    Rideandrepair Road Train Member

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    They’re the Pro’s with all tools and knowledge. They’ll figure it out. You say it was inframed 2 yrs ago? Did you get new injectors and head back then? So now after 6 injectors at Shop in Chicago, problem was gone during test drive, then came back? DD reman injectors? I’m just curious, no advice. They’ll figure it out. Money well spent. Beats throwing any more parts at it. Easy to get carried away. Engine harness, ECM, fuel pump, lines, sensors, pick up tubes, we could guess all day. Spend a bunch of money. Still have the problem. You should know soon, let us know.
     
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  2. Rideandrepair

    Rideandrepair Road Train Member

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    I like to guess, so my guess would be a bad pin on the ecm, or a bad connection to ecm on Engine harness. Or a broken wire on harness. Let them figure it out, I wouldn’t start requesting this or that, based on my wild guess. Always cost me more money when I’ve done that, Lol.
     
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  3. spsauerland

    spsauerland Road Train Member

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    New or reman? Big difference.
     
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  4. 4noReason

    4noReason Road Train Member

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    ya. i did overhaul 2 yrs ago. replaced head. left same injectors
     
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  5. 4noReason

    4noReason Road Train Member

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    i ordered injectors from freightliner. i kmow they sell new. but it had core charge. so maybe it was reman.
     
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  6. 4noReason

    4noReason Road Train Member

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    their going to put a camera in today. to cylinder 5. i just hate all this waiting bs. esp since its only 2nd shift working on it. like why not work round the dam clock. all this just to diagnose. im really worried im going to do a 2nd overhaul when my truck payment not done. insane
     
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  7. lwlevens

    lwlevens Medium Load Member

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    Shouldn't need another overhaul after only 2 years, maybe something wasn't done right the first time.
     
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  8. 4noReason

    4noReason Road Train Member

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    it doesnt use oil or coolant. im sure its a process of elimination. because ive never heard of overhaul but u add no oil or coolant. besides we used all oem parts. ill go bat crazy
     
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  9. Rideandrepair

    Rideandrepair Road Train Member

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    I doubt you’ll need another overhaul. So far assuming they actually change the injectors and harness in Chicago, nothings lost.
     
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  10. 4noReason

    4noReason Road Train Member

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    thats wat i said. im in a major city
     
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