[s-cars] Fuel Injector R&R

[Douglas Landaeta]

good details, someone keep feeding a wiki somewhere...
oh and when you go to reinstall the injectors, I found that the clips can
be, well, rusty albeit serviceable, but ordering up a set of the clips will
ensure a nice tight fit and easy reinstall with the rebuilt injectors with
new seals.

On Mon, Jun 8, 2009 at 10:48 AM, Tom Green <trgreen at comcast.net> wrote:

> >
> Hopefully you can find someone on this side of the pond to clean
> injectors,
> Tony.  It should include a total refurbishment of the mechanical
> parts- new
> seals, pintle caps and paint along with cleaning and flow check/spray
> pattern
> visual inspection.  Diesel shops perform a lot of this since diesel
> injectors are
> direct injection at higher pressure and flow and subject to wear and
> clogging.
>
> A dedicated gasoline shop may have a more sophisticated flow check for
> each injector rather than just a volume/time comparison for all five,
> but if the
> volume is checked carefully, it should suffice for comparison.  If you
> are
> matching flow for a high HP engine, you likely need more than 5 in the
> test
> which would mean a dedicated shop with spares to swap, or buy 5 flow
> matched injectors.
>
> You can run BG44K and other cleaners and decide empirically  by fuel
> mileage and engine performance that the injectors are good, but the
> only way to verify spray pattern and balanced flow is to remove and
> check.
>
> You probably can't buy the parts for refurbishment at the cost of a shop
> total refurbishment, so sending them out makes sense to me.  Spend
> your time cleaning the intake manifold.
>
> Tom
>
>
>
>
> > -----Original Message-----
> > Date: Sun, 7 Jun 2009 19:39:21 -0400
> > From: "Tony Curran" <tony.curran at sympatico.ca>
> > Subject: [s-cars] Fuel Injector R&R
> > To: <s-car-list at audifans.com>
> > Message-ID: <BLU0-SMTP9668B4A8366F161100BFE08A460 at phx.gbl>
> > Content-Type: text/plain;     charset="us-ascii"
> >
> > Hi folks,
> >
> > I now have 175000kms on my S6 and was wondering if the spray of the
> > injectors can be improved by removing and cleaning. Is there a
> > recommended
> > method for doing this? Or just run a bottle of cleaner in with the
> > gas?
> >
> > There's a company advertising on Ebay UK where one can send them to
> > for
> > "ultrasonic" cleaning - anyone heard of this process before?
>
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