Sounds to me like you still have a lot of time left on those stock injectors. Also sounds like you should stick to stock when replacing them since you are only hauling loads locally. Don't over complicate things like many of us have done here.

 

 

I wanted more power and have the Transmission and have some of the other mods to support bigger injectors but ultimately decided that I didn’t want to switch out my rods to forged units so I went with brand new stock Alliant injectors. ( I had a reman motorcraft fa in 15k miles )

 

Read this by Sous(& company).

https://www.ford-trucks.com/forums/1...ad-aa-etc.html

 

 

Some of the best advice anyone can give you and should be heeded by anyone thinking about upgrading injectors.

I was dead set on 160/80 injectors, but then realized by installing an SXE turbo (which I was going to upgrade the turbo anyway) that I could keep my OEM injectors for the rest of their life. That may be 10K miles or 100K miles, or more... Once I need to replace injectors, I will more than likely stick with stock AD injectors and keep is simple since the SXE picks up all of the slack I had which I thought was under-performing injectors.

Alliant injectors like Pirate4x4 said are the best you can get.

If you are looking for a rebuilder, then Rosewood diesel with YOUR OWN injectors sent in for rebuilt is the only way I would consider remanufactured injectors. Other than that, new injectors is the only option for me.

How far we all have come is amazing. I can remember sitting in front of my screen scratching my head and being so confused my eyes were going different directions.

 

Do a Buzz Test before you crank the truck on a cold morning.... and a Cylinder Contribution Test at some point.

Chances are you only need to re-set the gaps on your Poppet valves, which is just pulling the solenoids off top of injectors. A day's work and about $100 for kit.
Or spend the $$$$ on new injectors, if your pockets are deep.

My truck is just a daily driver and I rarely pull a load.... but it gets 17-17.5 mpg with my 18 year old injectors....with almost 480,000 miles.
New O-rings.... and re-setting gaps on injectors is all I've ever done.

But then.... when it hits 500,000, I am planning to replace injectors...

 

 

This is one shim kit that someone used recently and good success with.

https://www.ebay.com/itm/INTERNATION...s/191606953289

I have never done it, but many, many have and the results are usually good. As MoBill122 said, you can tell if the injector/solenoid needs to be shimmed with a buzz test when you have the truck in a KOEO state.

 

I shimmed my injectors a while back (went to 160/80 single shots a year ago now). Why did I shim them back then? I had them out doing O-rings, all sounded healthy with a buzz test BUT I used all my oil in about thirty miles...

When I shimmed my injectors I had roughly 365k or so on the truck (guesstimation there, at 390k now) and all were about 0.001-0.002" worth of clearance from the injector body to the bottom of the armature plate - spec is 0.004". Truck got decent mileage after, 17 in the city (same as before) and 19.5 on the highway (about a 1.5 bump). While shimming will definitely get your injectors back into spec, you are prolonging the inevitable with it.

Stock injectors only have about 60HP or so that can be squeezed out of them - they are 140cc injectors, and can only flow so much (140/0 in the nomeclature you'll see tossed around. That refers to 140cc fuel flow over 100 injections (correct me if I'm wrong on that one) and 0% (or stock sized) nozzle). A lot of the 'seat of your pants' feel I've seen is the throttle curve being more aggressive as it starts out on the higher horse tunes.

Whatever you do, I suggest going with new injectors. I fought a year long battle trying to get my truck to idle right with them - and I'm not the only one that has had to do that. First started as a poppet seazing in place and then the ol girl started knocking occasionally. It turned into a P1316 that I was chalking up to being "one of those things" until it finally disappeared with my new Stage 2 injectors. Long story short, one injector wasn't firing as it was supposed to and the IDM picked up the imbalance - it just wasn't real sure what was imbalanced. I went in and worked on the injectors about eight times within six months.

I've got 10k on my new 160/80s from Full Force Diesel and thoroughly enjoy them - highest I've ever seen EGTs was 950°F or so while getting on it uphill grossing 21k. While by no means am I saying go straight for the 160/80s, but I'd start putting some money aside for injectors and what not for when the time comes. That way you can swap them in and go on for another couple hundred thousand.

Who knows, you may get another 200k out of those stock ones without needing to shim them!

 

I concur with Alliants or Rosewoods for a rebuild IF you don't want new. I don't recommend Full Force or Swamps. There are too many hit/miss threads with those companies.

 

I dont no crap about injectors either and also, i want to stay stock too. Having a company rebuild my AD's would only be sent to Rosewood whom ive learned over the last 8yrs being around here, is the place and their rep proceeds them. Now, you having the hydra, i wouldnt think twice but to step up to the ford oem AC injectors. Single shot and gives a few extra ponies in doing so with your hydra being able to drive/calibrate the truck with...