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race7820000 · 02-21-2017, **(Subject: cummins isx injector )**

Is there anyway to tell if an injector has been rebuilt?

should you be able to see the holes were it sprays the fuel into the cylinder?

I only got one out so far because I ran out of daylight in the barn lol

thanks

Nilao · 02-21-2017, **(Subject: cummins isx injector )**

Unless I'm mistaken a reman has RX at the end of the serial number. Yes, you should be able to see the holes.

race7820000 · 02-21-2017, **(Subject: cummins isx injector )**

here is a pic before I tried to clean it up

fargonaz · 02-21-2017, **(Subject: cummins isx injector )**

Is it 'hole(s)' or one main orifice? I've never seen one up close and personal.

Nilao · 02-21-2017, **(Subject: cummins isx injector )**

Depending on the injector there are 5 or 6 holes. It's important to make sure the one you replace it with has the same number of holes otherwise the spray pattern will be off.

Rawze · 02-22-2017, **(Subject: cummins isx injector )**

Yes, there are different size injectors for ISx. Make sure you go back with the SAME SIZE. Don't do something stupid like trying to up-size them or something. It will throw everything in the engine off including injection timing unless you do a complete custom tune the ECM for it and make all the dozens of corrections.

race7820000 · 02-22-2017, **(Subject: cummins isx injector )**

I'm sure this didn't help performance lol

race7820000 · 02-22-2017, **(Subject: cummins isx injector )**

What would cause this? The injector cup?

Rawze · 02-22-2017, **(Subject: cummins isx injector )**

(02-22-2017 )race7820000 Wrote: What would cause this? The injector cup?

That is a leaking injector cup likely from worn out o-rings on the injector.

It also looks like that injector has suffered some reflected heat in the exhaust at some point.

just my own thoughts on it any ways.