Injector Flow testing

[tyr382]

Ok iv given up

This is my last resort,
Does anyone know if there is anyone in Australia who can clean and flow test Audi FSI injectors ?
Iv called up every injector shop and they all say the same thing.
They don’t have the equipment to carry out a flow test for direct injectors.
What the hell is going on?
So does anyone know anywhere in this country where I can just send my injectors to get cleaned and tested before I can install them.
Being that its going to cost around $190 or so per injector for new ones and I need a total in 10 done, buying new ones is not really a justifiable option.

[steagles]

I got a quote from LG Automotive & Dyno here in Townsville Nth QLD for a decarbon clean of my Tiguan for $900.

That included sending off the injectors for cleaning here in Townsville and I think getting them flow tested.

I don't remember who they said they use.

You can ring them and check if you like.

[tyr382]

Thanks mate Ill give em a call tomorrow


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[tyr382]

I think I might just get a ultrasonic clean done and hope for the best. According to the Audi workshop Manual there is no procedure to check conduct a flow test, just mentions to clean them.


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[tyr382]

Ok for anyone who is following this or stumbles upon this wanting an answer, I found one place in Melbourne who can clean and flow test Audi FSI injectors

Home - Aussie Injectors

For what I understand they are the only ones who can fully service FSI injectors. So hopefully this will help someone out.


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[ProfessorExperimental]

Just digging this up to add that you can obviously flow test your own injectors, perhaps not as accurately as a dedicated test rig and not at service pressure but:

The feed port sans oring/support washer fits nice and snug into standard 3/8" EFI fuel hose, clamp it if you like. Then all you need is a pressurised supply of your chosen fluid (eg injector cleaner). I just used a length of hose sprayed full of degreaser with my air gun jammed in the other end with a gentle trigger finger, but for ten I'd bother building a manifold with a fluid container (think old sealed oil catch can or so)

Then you need to trigger the injectors. I bodged up some croc clips to 4?mm spade terminals from Jaycar (heatshrink mandatory if noninsul) and jammed them on by hand (bit fiddly but gets easier by injector 3...). Pin 2 is ground (not that I think it matters). Then supply 12V. I used an old AA NiMH charger plugpack, which had the lovely side effect of voltage sagging as the piezo activated just enough to shut off the injector, giving me about a 20% duty cycle by default.
[Edit] if your injector gets hot stop, disconnect. Seek another power supply. I started out using a car battery charger, too much amps obviously.

Last thing you need is a measuring cylinder and a stopwatch. Obvs more than one if you do them in parallel, but do say 3 runs per injector and I doubt your errors would be significant if you run them for a minute or more doing it sequentially.

The only thing a machine does different us automate much of the process and have neat/easy connectors to save time and avoid mistakes when used regularly. The "science" (*vom*) of the procedure is the same.