I saw this video on youtube: http://www.youtube.com/watch?v=VFJlTfHyrUk

Does anyone have experience removing their injectors and using a similar method to this? I was thinking about doing it when I replace the rear spark plugs. IIRC there are low impedance injectors and high impedance. Is it fine to hook up the 3.5L ones straight to a car battery without a current limiting resistor?

That looks pretty good to me, although i would use the mains 12v adapter as it will only be milliamps as opposed to amps on the car battery, less chance to do any damage i would think.

i'll just measure resistance with a multimeter before hand to be safe.

you can hook them up to 12v. That's how mine are wired up. 12v+ ignition switched, earthed through injector outputs of ECU.

Sorry but that is a load of BS

Carb cleaner will not remove the baked on carbon under the pintal of the injector. It may at a stretch remove some gum in the injector but fuel flow will do that anyway

If you want to clean your injectors get a good onboard flush or ultrasonic flush done, lets face it, is not such a big cost to pay given how often it gets done

Anyone know how the ultrasonic cleaning works? Do they just bath them or run them at he same time some how? Be interested to know, wonder how hard it would be to make something up to do it....

They use an expensive machine like this:

http://fuelinjector.com.au/images/cleaning%20machine.gif

To make something up to do it will be very ****ing hard.

http://www.rceng.com/Fuel-Injector-Cleaning-P43C0.aspx for more info on the ultrasonic injector cleaning process.

what chemicals are used for onboard flush that aren't present in carby cleaner? I'm curious, is it beacuse it has to be sensor safe?

I use an ultrasonic cleaner on spray nozzles on a daily basis and to be honest I feel it is the chemical that does nearly all the work. The concentrated chemical under pressure flowing through the pulsed injector will do much more than the 20 min soak in the ultrasonic bath. There are some places that do Carbon clean where they leave your injectors in the engine and run the motor on the cleaning solution which also has the benefit of cleaning your upper cylinder and valve gear a bit.