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Old 01-07-2013, 04:29 PM   #1 (permalink)
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Rebuilding Injectors

Well I'm stumped. I picked up a motor recently and it was supposed to have 100hp injectors. After all the little stories I have heard on here, I was concerned about just taking the PO at his word that they were actually 100hp injectors. So I had them taken to the only close injector shop in my area to have them pop tested and checked to confirm their size. The shop tested them all, all were great except one. One wasn't spraying at all. So I asked them about the hp rating. They told me that they did not do anything like that with aftermarket parts and only worked with stock injectors. I said, okay fine, can you just rebuild this one and I will put them in reguardless of their rating, at least they'll all match that way. They again said no, no aftermarket parts. So here is my delima

*I have 5 good injectors, but cannot confirm their hp rating.

*I can not justify in my mind buy 6 new injectors, when only one is bad.

*Nobody I call seems to be willing to rebuild injectors at all, much less just the one I am in need of.

*If I just take the PO at his word and buy 1 good 100hp injector, I risk mixing a 100hp with stock injectors. If I buy 1 stock ... well, yall get the idea.

Who does this kind of work? Is this something I can just do myself, at home, at my workbench. I hear swapping the nozzles isn't bad, how much worse can a complete rebuild be? Is there a way to confirm their rating by using the numbers stamped on the injectors themselves (diesel performance shops say that is what they would do and its possible, searching here says its not)?

Thanks all.
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Old 01-07-2013, 04:34 PM   #2 (permalink)
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Your best option is get onto someone like dieselautopower and get a set of 100hp injectors and return your old ones as cores. By the time you've bought a set of nozzles and paid a shop to set the pop off pressures on the nozzles your near the price of a set of built injectors. Don't try mixing up injectors whatever you do because if you get it wrong you'll be buying another engine.
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Old 01-07-2013, 05:10 PM   #3 (permalink)
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So I guess, I'm way confused about things. You're saying its cheaper for me to spend $420 on 6 new injectors, when I only need 1, then it is to have 1 injector rebuilt?

Am I missing something?
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Old 01-07-2013, 05:26 PM   #4 (permalink)
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No if you can find out the brand of injector it is and confirm thats it's 100hp then just rebuild it and that is cheap. However all the 100hp injector manufactures are different so just simply picking up a 100hp nozzle from anyone won't be good. I can't remember exactly what there called but I think it's something like a pin gauge which has tiny pins which will fit into a particular sized nozzle's injection hole's to tell you the size of the nozzle, in this case whether it is a 100 hp or not.
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Old 01-07-2013, 05:52 PM   #5 (permalink)
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Okay, that's clearer.
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Old 01-07-2013, 10:07 PM   #6 (permalink)
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Any other suggestions?
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Old 01-08-2013, 02:39 AM   #7 (permalink)
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We have pin gauges and may be able to get the last one to fire. Send us a PM if you want them rebuilt and matched.
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Old 01-08-2013, 08:39 AM   #8 (permalink)
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did you try pulling the injector down and cleaning it out with coleman fuel?

maybe its just clogged up?
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