Personally (don't take this the wrong way) you're out of your mind if you pay to have ARP's put in one at a time, that is a big NO NO, I don't care what that guy says. I would NEVER do that. How do you know the heads are flat now? Your gaskets could pop tomorrow.

I don't know how they're getting OEM Ford injectors for that price, even Tousley is ~ $1600, before cores. I'd be skeptical of exactly what they're giving you in that regard. Also, why would you need all 8? I wouldn't replace more than you need to.

I'd be going with option 1 myslef.

 

Thanks Mdub. What it says on the estimate is OEM 6.0 injectors. Remanufactured and spool valve issues fixed. Full set.

I assume he would return my old ones for the core.

Does it make sense to replace a whole set to get the updated injectors, or does it make more sense to just replace any injectors that may be bad?

From what I've read I have mixed feelings about the one at a time stud replacement too. There is no warranty when it's done that way. The only thing that sways me a little bit is there is really highly respected shop in Oregon that also says they will do them that way.

I think I am leaning towards option one too, and replacing any injectors that may need it. How involved is changing the injectors? If I need others down the road how far do they have to go in to the motor to replace them? If it's a lot of time to get to them it might make sense to replace them while they're in there. If they are easily accessible and not a lot of labor to actually get to them, it's probably now worth it.

 

Injector swap can be done in the driveway with basic tools, not a ton of labor. Not really saving a whole lot by doing it now, in fact you'd be wasting more, no need to replace all 8. I would say replace whatever one's may need it, but I wouldn't even want this shop to put any in, UNLESS they're going to use factory OEM Ford injectors. Go to Ford and buy them and give them to put in if you want to. I wouldn't use anything else. They're basically one of the only places you can get decent remans. (there are no new 6.0 injectors).

Read around on some of the big powerstroke sites too, check in and see what they think about the ARP's one at a time. I can name one forum member out of all the forums I'm on that it actually worked for, but he was running stock tuning the whole time. That's it, everyone else I've read about trying it has failed.

 

The estimate says reman Ford injectors. Sounds like there is no need to replace them all right now.

Can a Ford dealer diagnose which injector it is that needs replaced fairly economically?

My truck is stock tuning and has been since it was new. I am still thinking that the one at a time isn't the way to go. If my HG's go I will get the heads done properly and have them put in then. If they don't I've saved some money.

 

Right, there are no such things as an aftermarket 6.0 injector, so any no-name shop can "reman" an OEM Ford injector, but chances are it's not going to work much better than what you have. As far as I know, Ford is one of the only companies who remans them properly and actually changes out the spool valve. Ford injectors are ~$220 each on some of the cheapest Ford sites I've seen. There is also a $180 core, obviously you wouldn't pay this if the shop was doing it because they would keep your old ones.

If you buy injectors from Ford, they come with a 12 month/12k mile warranty too, just so you know.

Depending on how bad the injector is, it could be picked up with a scanner. If it's an electrical issue they should be able to tell via a buzz test. The best way is a cylinder contribution test, you can watch it being plotted on a graph live time and compare it to the other cylinders. That is the best way I know. Both buzz testing and cylinder contribution testing can be done with AutoEnginiuity as well. Now, as far as Ford diagnosing... maybe. Depends on the tech. I haven't had much luck with any Ford diesel tech's knowing squat.

 

Thanks Mdub.

I checked my FICM voltage this morning when my truck was cold:

Key On it bounced from 47.5 - 48.0

Cranking it stayed at 48.0

Running right after being started it stayed at 48.5

I will ask the shop who rebuilds their injectors. It does say on the estimate "spool valve issues fixed". Should I find out what that means?

 

FICM is good to go.

Yes you should definitely find out. I bet they just dump in a bottle of Rev-X and call it a day.

If I was you, I'd try two bottles of Rev-X right now, I bet a lot of your injector issues disappear.

 

I have been running a little bit extra cetane boost and my truck seems to be running a lot better. I am thinking maybe it is cleaning things out a bit?

I have an appointment to drop my truck off on Friday and they will keep it for a week. It's a couple hour drive away. The way the truck is running right now I am thinking I probably won't need any injectors. They will put new oil in after doing the work on the truck. I think I will order some Rev-X and dump it in as soon as a I pick it up, unless that isn't a good idea?

Right now I am planning on new oil cooler EGR delete, the stand pipes, STC fitting, dummy plugs, new fuel pressure regulator spring, etc, plus the EGT and Turbo timer for my Edge Insight CTS. If my HG's go down the road I'll have the ARP's put in at that time. Sound like a reasonable course of action?

 

Yes it does. You can add the Rev-X when you get it back. You can put it in any time, but if you're going to be changing the oil right away, no point dumping $70 worth of additive in there.

The cetane boost probably doesn't hurt, but that's the fuel side. The oil side of the injector is where it sticks, thus Rev-x, an oil additive.

 

I will plan on adding some Rev-X as soon as I get my truck back. I'm dropping it off tomorrow.

I have the turbo underboost code, but my truck is actually running, really, really well right now other than the delta's being too high. Again this morning my Insight showed VGT% sort of stuck at 85% for a while. From my understanding this percentage is just what the controller is telling the turbo to do, and not what the turbo is actually doing.

I have started getting a sort of "moaning" noise, particularly when the truck is cold and first started. To me is sounds like it must be the turbo or something. The truck is starting and running great though.