[Vwdiesel] injector leaks

[Erik Lane]

I tried rebuilding my injectors one time and was pretty disappointed with
the results. I don't know what I'm doing wrong. I bought new nozzles and put
them in and every one of them looked good on the test fixture, but then when
I put them in the car they leaked between the two halves of the injector. So
I took them back out and grumbled at them some and put them away for a
month. Then I tried REALLY LIGHTLY filing the one side and making sure there
wasn't anything on the mating surface inside. I took my time trying to make
sure that everything was pristine before putting them back together. (I have
a Bentley manual and have been torquing them to spec every time.) Put them
back in the car and they still leak. So I took them back out with much
grumbling and now don't know what to do. Is there a trick to it that I'm
just missing, or should I give up and take them in to the pros? I like doing
all my own work and thought that this sounded fairly straightforward - I
even bought a pressure tester. But I'm a little frustrated and disappointed
with it all now.

Any help that anyone can give, or even just a hint which what to look for
would be very much appreciated!!

Thanks,
Erik

On 10/2/06, LBaird119 at aol.com <LBaird119 at aol.com> wrote:
>
> In a message dated 10/1/2006 11:31:45 PM Pacific Daylight Time,
> db53248 at alltel.net writes:
>
> > I noticed that the #2
> > injector was bubbling at the injector to head interface. After running
> > awhile to build up some heat and move the coolant, the leak stopped. Is
> this
> > the kind of thing that will stay sealed or will it always leak when the
> > engine is cold? Can I stop it by retorquing the injector or will I need
> to
> > remove it and reinstall it (maybe with some thread sealer)?
> >
>
> You don't want to use any sealer. A little anti-sieze won't
> hurt. Did you use new heat shields or at least re-form the
> old ones? You could clean the socket out a bit but it's not
> unusual to have a little leaking like that. The leaking usually
> isn't a concern as it'll seal up and may be already for you.
> The liquid making the bubbles is usually a leaking injector
> body or connections. You want to fix that because it costs
> you mileage and makes the engine and cabin air smell like
> diesel fuel.
> Loren
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
>