Injector cups - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 09-16-2019, 08:29 PM Thread Starter
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Injector cups

Bought all new injectors and a tuner, took apart passenger side first, back to front, and the front injector I noticed a small dot of fluid (not oil) on the brass end, took a inspection light and looked into the hole and there is what appears to be coolant visibly seeping out of the cup, I opened this up like 6 months ago an I don't think it was like that, so I'm guessing my cup is cracked, for the actual question, kinda short on time and money, can I buy one cup or will I have to change them all? Also the coolant bottle has black residue inside it. The coolant itself looks good though.
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post #2 of 8 (permalink) Old 09-16-2019, 08:58 PM
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Sure you can buy the one....however that is about a huge gamble with the rest of them unless if you don’t care about doing this again.

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post #3 of 8 (permalink) Old 09-16-2019, 09:12 PM Thread Starter
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I don't mind doing it again if I have to, relatively easy job, say another one cracks, does it cause it to burn coolant, or does it push fuel into the coolant?
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post #4 of 8 (permalink) Old 09-16-2019, 09:41 PM
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Re: Injector cups

Coolant is always the lowest pressure, so it will always push into the coolant.


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post #5 of 8 (permalink) Old 09-16-2019, 11:23 PM Thread Starter
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10/4 I'll change the one over for now, maybe make an order off rosewood at a later date for the rest of the cups/tool, could've been leaking very long, can't see any fuel in the coolant at all, it always had that black residue on the bottle though.
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post #6 of 8 (permalink) Old 09-17-2019, 12:34 AM
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Re: Injector cups

Riff raff is now making machined billet stainless steel injector cups, might be worth looking into.


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New Motor at 352,000, DieselSite Legendary Trans at 356,000 and many more
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post #7 of 8 (permalink) Old 09-17-2019, 01:28 AM Thread Starter
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Thanks for the info, will definitely check it out
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post #8 of 8 (permalink) Old 09-20-2019, 05:25 AM
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Re: Injector cups

I used the RiffRaff cup remove/install tool, rented from Bitterroot Diesel, a few weeks ago. That thing is a dream to use and worth every penny, but i'd definitely go ahead and do the others, since you're already paying for the tool.

Don't forget to get the special fancy loctite 620 that goes on the new cups when pressing them in!

Jerud
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