Looking at getting injectors serviced-anyone done this?

Testing the spray pattern and pressure of injectors is a fairly simple procedure for older diesels. That will tell you if they need to be serviced or not.
I get the Perkins injectors serviced about every 100,000km, or earlier.

I had the Iveco we had in Europe done at 250,000km and the improvement in power and the reduction in smoke was dramatic. That probably had not been done before.

Cheers,
Peter
OKA196 Motorhome

Whats your idea of expensive?
200 series at around $1500 ea x 8 or a Prado 90 set at $600 fitted.

Did you change spark plugs on your petrol engines? Well it just like that. Its a critical key component that needs to be managed for peak performance & economy.
Stuffed injectors can cause excessive heat and melt pistons.
Non CR injector service is typically done every 100-150 thou. Plenty of people never do them and thats all the black soot you see from trucks. Don't do them on a CR motor and you'll destroy it.

Don't take it to general mechanic, go to a diesel specialist. Petrol injectors are quite different to reco than diesel.

How mechanically inclined are you? Can you live with the vehicle in your shed and off the road for a few days?

Injectors are usually reasonably easy to access. I had them done on my old Terrano II at 100 and 200K, I took them out myself and dropped them in at the diesel specialist though.
There was a bunch of intercooler plumbing I had to remove (top mount intercooler with bonnet scoop) and I needed a modified 27mm spanner to get them in and out. These days there are plenty of cheap deep sockets available that would do the job with slight modification. Other than that, it was just time and basic tools.

From memory getting 4 overhauled with new needles and nozzles and grabbing a set of washers that they seat against was under $300 (was a while ago now though). The second time we found that the lift sensor in No. 1 injector was stuffed, so that was an expensive replacement, but the other 3 were relatively cheap.
If I was paying for labor, then there would be a few workshop hours on top of that involving pulling everything out, running the parts to a specialist workshop and putting it all back in.

You say it is not common rail so new injectors should be only a few $ dearer than recon. A set for a 1HZ genuine tojo will probably be around $500 for the 6.

The other thing in the gravy train is the pump, now that is where the $'s are.

I don't know what vehicle you own but all the best and have a look around on the net for the price of new injectors for your vehicle.

There was a mob called Hi-Flo that would do injector exchange type service which I had intended to use prior to selling my diesel, however sold it w/o need. The service offered then was quite attractive, not sure if they are still operating but may be worth a look see.

Just gave my GU 4.2TD a birthday yesterday at 302K. New injectors, glow plugs etc at a cost of 1k. Was still going fantastically but with a trip in 4 weeks thought it was about time to freshen it up ready for the next 300k.