Fuel injector servicing - advisable or not

[Retro Pedro]

I had another post running related to my dad's Hyundai Amica with fuel injector problems. Had them cleaned ultrasonically by a friend of a friend and was wondering if this is something worth considering on the Fronty's or leave well alone, i.e. if it's not broken then don't fix it.
As pressurised fuel is part of the equation, thought it best to get a new set of 'O' rings for the cleaned injectors and at the same time, a set of filters. The filters were only 50p each, and one is required for each injector. Supplier advised me the screw a self tapper into the old filters, turn in 3-4 times to loosen, then grip the screw head in a vice and gentle pull the injector. Worked a treat.
What I did notice was that the removed filters had a crusty coating on the mesh. I don't know if this coating was the residue from the cleaning process or natural deposits through the fuel system.
Seeing this stuff, I'm thinking that maybe I ought to think about changing the injector filters on the Fronty, if they exist on a diesel motor?

[Drift]

Ive got a set of injectors here I am going to get cleaned and replace mine, then will have a spare set to pass on, just getting the money together to get them done

[Rifleman]

Best to hand them in to the pros mate. Let them overhaul them for you.
They will also teat them when they arte finished to make sure they all inject the same amount of fuel and at the correct pressure.

[Retro Pedro]

Reckon your right Keith - as least you will know there are calculations being made.
What would you expect to pay for an injector service?
I've seen £10 and £12.50 per injector plus P&P on ebay, but don't know if they are reputable company's or somebody working from home with a small set up.

[Rifleman]

Its been a long time since ive had this done mate.
Check out the internet for a company near you. Dont send them anywhere, better taking them in person.

[Drift]

Use Diesel Bob, very reputable and even has our link on his site

http://www.dieselbob.co.uk/injectors.shtml