[Vwdiesel] Re: cleaning carbon clogged rings without disassembly + *new* re-using injector heat shields

[gary]

Actually,
These heat shields are ductile iron.

If you take a new one, place it on the tip of an injector, the
"inner"ring sits on the face of the nozzle and the 'outer' ring does
quite touch the face. Now do the same with a used one. The inner and
outer rings fit flush with the nozzle face.

Though they are cheap enough to have a quantity in hand, I have re-used
them on occasion. I used a #27 or 30 torx bit with a tulip shaped shank
and gently formed(read: beat) the inner ring out just a smidgeon to
approach that of a new one.

Get a little over-zealous with the reforming and these heat shields will
crack.


YMMV,

-Gary 


On Sun, 2005-05-15 at 14:01 -0400, Area31 Research Facility wrote:
> Loren,
> 
> Yes. Actually I have the injector wrapped in a clean cloth in my jacket pocket so I can test the fit the tool at the store.
> 
> BTW,  I've read that the injector heat shields should not be re-used.  I have examined the very thick, very hardened looking steel shield disc that I pulled out of hole #4 and for the life of me cannot immagine why it should not be re-used.  It looks too hard to have any crush qualities.  What say you?
> 
> I've copied this to the list as it is a question whose answer would be of benefit to a larger group than just me.
> 
> Thanx,
> Rob