Reuse injection lines with rust - Dodge Cummins Diesel Forum
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post #1 of 48 (permalink) Old 11-16-2019, 06:50 PM Thread Starter
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Reuse injection lines with rust

Replacing my injectors with new BBIs and all of my injection lines appear to have rust in them. Is this normal? Should I reuse them? I picked up some really watery fuel about 30k miles ago and it rusted my fuel filter top. Truck ran great and these are the original injectors. Tips had a good bit of goop on them.

I donít want to jeapordize these super expensive new injectors, but I also donít want to replace my whole fuel system if this is normal!




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post #2 of 48 (permalink) Old 11-16-2019, 07:04 PM Thread Starter
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post #3 of 48 (permalink) Old 11-16-2019, 07:04 PM
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I’d try and clean them up with a non abrasive rag.

If they don’t come clean I would replace them.

Buy them from Cummins direct. They’ll be much cheaper and OEM still than dealer

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post #4 of 48 (permalink) Old 11-16-2019, 08:36 PM Thread Starter
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I'm not re-using the injectors, just included that picture for reference. The rust appears to be all inside the lines, so not really sure how to clean them out?

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post #5 of 48 (permalink) Old 11-16-2019, 08:49 PM
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If you have rust in your fuel and it ever breaks free, it could right into your new injector and ruin it.

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post #6 of 48 (permalink) Old 11-16-2019, 09:00 PM
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If you have rust in the injector lines, and it appears that you do, I personally would replace everything back to the filter. Probably drain the tank and clean it as well as blowing out the line to be sure there is no water left in the system. I'd also be changing my filters more frequently until all the rust stopped showing up. Keep on top of the water separator as well. Cheaper to be cautious than to replace another set of injectors.
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post #7 of 48 (permalink) Old 11-16-2019, 09:30 PM Thread Starter
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I was afraid that was going to be the advice... I haven't had any rusty filters since I switched to the CAT UHE filter, and haven't any issues with how it runs, but i really don't like the idea of the rust going through these new BBIs..

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post #8 of 48 (permalink) Old 11-17-2019, 12:17 AM
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If there is visible rust inside the lines, throw them away.
Also check the rail inside, rust throw away.
Must use new connector tubes or your injector warranty is tiitties up.

Any rust in the system will show up and be trapped in those new expensive injectors, when they plug up and you send in for warranty, DENIED
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post #9 of 48 (permalink) Old 11-17-2019, 08:43 AM
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Quote:
Originally Posted by Kmehr View Post
I'm not re-using the injectors, just included that picture for reference. The rust appears to be all inside the lines, so not really sure how to clean them out?
Protect your new injectors and pump with a FASS system there's an old thread about mine somewhere here and it still works great.

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post #10 of 48 (permalink) Old 11-17-2019, 09:30 AM
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Quote:
Originally Posted by Kmehr View Post
Replacing my injectors with new BBIs and all of my injection lines appear to have rust in them. Is this normal? Should I reuse them? I picked up some really watery fuel about 30k miles ago and it rusted my fuel filter top. Truck ran great and these are the original injectors. Tips had a good bit of goop on them.

I donít want to jeapordize these super expensive new injectors, but I also donít want to replace my whole fuel system if this is normal!




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since you need to replace everything to eliminate the rust from the system, any chance you could take pics of the worst feed tube end & dump that end into a decent amount of the dex/merc atf, let it soak 24 or so hours and post a follow up pic?



what fuel are you using? (d2, b5, b20...)

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post #11 of 48 (permalink) Old 11-17-2019, 12:37 PM Thread Starter
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Playing it safe and ordered new lines, rail and "bag of parts" to replace the stuff fuel has touched in the CP3.

@steve05ram360 I will work on that today and post some pictures. I've never used biodiesel that I know of. On my normal routine, I only use the same two pumps at very high volume stations. I did a trip last winter across country and think I picked up a ton of water somewhere. I started a thread on it back then, other than changing filters though, this is the first I've done to take any of the fuel system apart.

https://www.cumminsforum.com/forum/3...ust-water.html
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Last edited by Kmehr; 11-17-2019 at 12:58 PM.
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post #12 of 48 (permalink) Old 11-17-2019, 02:57 PM
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thanks, curious to see the ATFs effect if any. i think none but a pic is worth a thousand words...

AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 424k, HPTuners, G56, 25.065 mpg, mpg threads ->https://www.cumminsforum.com/forum/3...l#post23312562
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