3406c mech black smoke on start up with new injectors

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Mr79W900A, Nov 27, 2020.

  1. AModelCat

    AModelCat Road Train Member

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    What's the S/N? Sometimes you get parts people that only search by prefix, which would list every possible nozzle used in that model of engine. Easy to make a mistake and order the wrong nozzle if there are several of them listed.
     
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  3. Mr79W900A

    Mr79W900A Bobtail Member

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    If your talking engine s/n it’s 3zj44731. These guys are a small shop the old boy who did it is the cat man in town and his boy is pretty knowledgeable in parts. So I’m hoping they did it right. It only goes to this shop when I can’t work on it. We were snowing here and I had no shop so I was at there mercy. FYI for anyone in Canada with this engine. My nozzles cost 1260 tax in and total was 2900. Charged me 10.50 hrs labour. Lol.
     
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  4. AModelCat

    AModelCat Road Train Member

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    Hopefully someone with SIS access can confirm correct P/N. I no longer have access to it unfortunately.
     
  5. Dino soar

    Dino soar Road Train Member

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    Is that in American dollars?
     
  6. Roger McG

    Roger McG Light Load Member

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    Yup that is correct part # 20r5169 injector nozzle as shipped in SN 3zj44731.
     
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  7. Roger McG

    Roger McG Light Load Member

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    I have gotten a reman injector nozzle from Cat that wasnt any good in the box,they had no problem exchanging it but I eat an afternoon of labor and chasing back to the Cat house
     
  8. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    GASP!
     
  9. Mr79W900A

    Mr79W900A Bobtail Member

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    Ya I figured it was the right part number. Thanks for looking it up to confirm guys. But ya it def smokes more than normal at idle. I am gonna ask them if they tested the new nozzles. If they didn’t I’ll be pist. Cause it’s smoking black pretty good at idle on start up and nothing has been touched with the timing or anything we had. Still pulls the same 26 psi, pyro temps are same etc. Just seems to me like it’s dumping to much raw fuel at idle. And just to clarify, these new nozzles wouldn’t cause that to smoke black for a bit hey
     
  10. Mr79W900A

    Mr79W900A Bobtail Member

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    Canadian dollars
     
    wore out Thanks this.
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