fuel injector inserts

[Kurt Deschler]

Brian,

The brass injector holders are about 2 cm tall. The first .5cm or so is
the taper and o-ring seat. The rest of the holder is all hex. They can be
hard to break loose. I recommend welding on a 2nd nut to avoid cracking or
mangling the brass. Be careful with the silicone-based lubricant as it
could damage the O2 sensor. Are you doing this job with the IM off? It's a
real tight fit with the IM on.

	-Kurt

On Mon, 19 Apr 2004, millertyme wrote:

> Kurt,
> I have all the new items coming in tomorrow am.  Hope to get them all
> replaced after work.  How deep does the allen wrench go into the
> injector holder?
> I don't have one that size so I will be using a 5/16 bolt (1/2" head)
> with a nut welded at the appropriate depth for turning out the insert.
> And for the seals, I picked up a bottle of silicon based o-ring
> lubricant.  Wont deteriate the rubber, and it goes in slick as ....
> Best stuff ive found yet.
> Thanks again
> Brian
>
>
>
> -----Original Message-----
> From: Kurt Deschler [mailto:desch at alum.wpi.edu]
> Sent: April 19, 2004 19:17
> To: millertyme
> Cc: quattro at audifans.com
> Subject: Re: fuel injector inserts
>
>
> Replace all the o-rings and all the inserts. The insert should be the
> red plastic ones. They clip onto the brass holders so they should come
> out together. They are most likely to break putting the injector back
> in. Total parts should be around $20 with bosch viton holder o-rings.
> You should do this job with the engine warm if at all possible since it
> makes a huge difference to the hardness of the large injector o-rings
> (even new ones). Sears has a 1/2" allen that works good for taking out
> the inserts. Clean the brass injector holders with emory paper while
> they are out. Lubricate the injector holder o-rings with plenty of gas
> before attempting to put them back in. Do not attempt in the cold or you
> will waste the holder o-rings and inserts (BTDT).
>
> 	Kurt
> 	87 5kcstq
> 	88 vw gti 16v
> 	00 s4
>
>
> > Message: 9
> > Date: Mon, 19 Apr 2004 15:41:55 -0400
> > From: Huw Powell <audi at humanspeakers.com>
> > Subject: Re: fuel injector inserts
> > To: millertyme <mlrtym at nbnet.nb.ca>
> > Cc: audi mailing list <quattro at audifans.com>
> > Message-ID: <40842B83.6030303 at humanspeakers.com>
> > Content-Type: text/plain; charset=us-ascii; format=flowed
> >
> >
> > > i am ordering new injectors for my 87 5KT and wanted to get
> > > suggestions if i should replace the inserts as well?
> >
> > I'd plan on it, they may come out in rough shape.  And they should be
> > fairly cheap.
> >
> > > in regards to replacing them, i read that they come out with a 13mm
> > > allen wrench.  is this information correct?
> >
> > I think so.  I've seen so many different styles of plastic injector
> > housings that I can't remember what goes with whatengine, though.
> >
> > > also, do both inserts come out together, or are they seperate?
> >
> > See previous answer...
> >
> > --
> > Huw Powell
> >
> > http://www.humanspeakers.com/audi
> >
> > http://www.humanthoughts.org/
>
>
>