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.
3406c mech black smoke on start up with new injectors
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Mr79W900A, Nov 27, 2020.
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AModelCat Thanks this.
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Hopefully someone with SIS access can confirm correct P/N. I no longer have access to it unfortunately.
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Yup that is correct part # 20r5169 injector nozzle as shipped in SN 3zj44731.
spsauerland Thanks this. -
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
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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
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