FICM, Injector, or worse

[6.0DJ]

Ok I own an 07 6.0 that started running ****ty yesterday. So today I did a voltage test on the FICM and I get 48 on the key and 48 running. I cleaned the EGR and changed the oil.

The truck doesnt run AS ROUGH but; it still blows black smoke and IS NOT running smooth.

I also ran a check on it and there are NO CODES.

So what are your thoughts on this?

Thank you

[F250SixOH]

Check FICM voltage while cranking. What oil are you running? Run revx if you haven't before. See if that clears it up.

[devster55]

Check the connectors on the back of the ficm.

[6.0DJ]

#8 injector was bad

[devster55]

Well at least you got it

[Mcwlandscaping]

Good evening! I'm new on here and mainly just doing some reading to get up to speed now that I own a 6.0. I'm just curious how, without any CEL, you were able to track down the problem to an injector. What lead you there as opposed to anywhere else?