Car has been occasionaly running poorly, misfire hesitation etc, i had learned to live with it but i read somewhere aboyt testing the impedance. I have done this with a multimeter. I set it to ohms then 200.
3 injectors all read around 2.2 but 1 read between 2.2 and 2.9 (fluctuation) and seemed to settle around 2.7.
Does anyone have any electrical knowledge that can advise me further. leak off tests is inconclusive as all injectors read the same. When the car is having a good day it runs fantastic, very smooth, nice accelleration, a pleasure to drive, but the bad days are really bugging me, its obviously intermittent, any ideas.

 

A test like that really isnt going to tell you much.

It isnt to say the injectors may not be part of the cause, but there could literally be dozens of causes of such problems.

Something like this might be of use to you

 

I know it could be other things as you say, i have replaced maf, turbo pipes , air intake pipes, fuel filter, egr solenoid, blanked off egr, replace 1 injector that was showing excessive leak off, i m fed up with tdci fords!

 

Oh right, it's a diesel....different matter entirely !! They're the work of the devil when they go wrong.

You'll need a lot more than a multimeter ! Only way to test the injectors, is to remove them and have them tested properly.