cleaning out injectors

[jimfoo]

My "new" used TDI injectors have lots of red gooey crap in them. What is the best thing to dissolve this stuff?

[Slave2School]

I've used an acetone bath to clean up injectors, seemed to work well.

[Baselyne]

I may be totaly wrong but isnt it just trani fluid to keep them from siezing/corroding and rusting?

Used parts that I have bought for a fuel system always get the trani fluid fill to presurve them....

My CIS fuel pump did anyways....that *** will just burn off first crank....and im also told that trani fluid in the cilinder will slow down lost compression due to worn rings and such.....

i may be way out in left field but .......meh

someone to clear this up for us? please chime in....

[jimfoo]

Giles said it sounded like veggie oil. It has a consistency of dried silicone, so isn't coming out on its own. I bought a can of nasty carb dip, and have one that's been sitting in it a few days. I'll probably look at it today. Even if I can't get them clean, Giles was going to throw them in an ultrasonic cleaner and check them out when I get around to sending my pump in.

[Baselyne]

So Im guessing this is a presurvation compound or? Like is this a comman problem for used injectors?

Where did these injectors come from?

It's great to know, as it could have been my injectors and id of never knew what to do...

Jimfoo wrote: "I bought a can of nasty carb dip, and have one that's been sitting in it a few days. I'll probably look at it today."

Once you had time to look please post what the results were and if it worked what brand of nasty carb dip did you buy?

[jimfoo]

I think the injectors had just been sitting a long time, and the stuff turned to goo. The stuff I am using is Berryman Chem-Dip carburettor and parts cleaner. It's a 1 gal can with a basket inside. It is nasty stuff, so be sure to use gloves & goggles. It seems to work fairly well. I took one injector as far apart as I could and left it in for a few days. Before, the nozzle was completely clogged, now it's almost totally clear, The gooey stuff on the spring that I got out is gone. I was able to get the second spring and shim out after the first soak, but they are still covered, probably because the cleaner couldn't get to them well, so I am re-soaking them.

[the caveman]

i had some veg oil valves that had been sitting for a while and were completely gummed up. i tried biodiesel, diesel, gasoline[!]. finally the only thing that worked was brake fliud. cleaned them like new. it's also what we used to clean old carbs that had been sitting for a long time.

[subsonic]

So does anyone have any suggestions for injectors or IP's that will be sitting for a while?  What will keep them fresh and ready to go?

[jimfoo]

I'd say ATF as I don't think it has any shelf life, or maybe thin motor oil or lamp oil.

[jtanguay]

i had some veg oil valves that had been sitting for a while and were completely gummed up. i tried biodiesel, diesel, gasoline[!]. finally the only thing that worked was brake fliud. cleaned them like new. it's also what we used to clean old carbs that had been sitting for a long time.

yea brake fluid is some real nasty stuff! but you need something tough to get something tough out... instead of fighting fire with fire, you're fighting fire with explosives, which works quite well  :lol:

[the caveman]

definitally atf to preserve them.