DIY backyard mechanic fuel injector cleaning

[benfrogg]

This is hardly my idea, but I do take credit for my adaptation of it. I googled some articles years ago when I needed to clean the injectors in my Volvo 740 turbo. I made some slight changes to the method, and here it is.
This could be handy for any backyard mechanic with limited access to fuel injector cleaning stations.
http://www.youtube.com/watch?v=2y_YSkJmXhM

While you are there, check out some of my tunes by my salsa band!
Let me know what you'all think of my method.
B

[schuylkill]

I don't understand the use of the vacuum. You don't show how the process actually works or I'm missing something. I want to do this so I'm interested but don't understand how to proceed.

[GasSavers_Erik]

He is using the vacuum to backwash the injectors with cleaner- the vacuum pulls the cleaner up through the tip of the injector and out the port that attaches to the fuel rail.

So- from what I saw, attach the vacuum hose to the fuel rail port and lay the injector tip in a cup full of cleaner. The injector must be open for the cleaner to flow through so you will have to supply a few short 12 volt bursts to allow the cleaner to flow through.

[dieselbenz]

Seems kind of dangerous to use the car battery for this. a small 9v battery would work just as well. I like this method.
http://www.jeepstrokers.com/forum/vi...p=11000#p11004

[GasSavers_TomO]

Thanks for the inspiration! I may adapt something like this to my spare sets to be cleaned.

[benfrogg]

Erik is right-
Backwashing with the vacuum through the spray end of the injector. I suppose this could be done from either end; backwashing makes more sense to me as you are more likely to get any small chunks that made it past the filter but not the valve itself.
I did not run the vacuum because it was super loud and you couldn't hear what I was saying anyway.

Tjts1 is also right, about the dangerous part. I wasn't too concerned about dc spark starting a fire; most people should probably opt for the switch assembly bit. I don't know what the flash point of injector cleaner is, but I suspect it's like oil not like gas. The fumes are the more dangerous part, I suspect as well.
As far as a 9v battery, I don't know if you'd have enough amps to keep it open or not. Besides, a 9v would produce just as much spark as my battery did in the way I was doing it.

The link was great and I daresay I like it better than my idea. Less damage to the vacuum if things go wrong! Also, you could do a before and after spray to see what you accomplished.