Fuel injector cleaning system?

[Len Sabatine]

    Yep , GM code speak.
    Len

>Delco X66??  That's got to be a code name for GM Top Engine Cleaner.
>Very effective stuff.
>Shannen
>
>Len Sabatine wrote:
> >
> >    We routinely use Delco X66 , also helps loosen crustaceans from back of
> > valves
> >   and upper Cyl areas. The scheme you mention gets it done.
> >    Len
> > >I run a full service repair shop & have been around several injector 
> cleaning
> > >systems. Nothing I've seen seems to work better than a 1/3 Delco X66 & 2/3
> > >gasoline mixture run through the pressure test port with the return line
> > >blocked off. I've seen factory systems & homemade systems alike. It's 
> all a
> > >matter of hooking up a reservoir for the liquid with enough pressure 
> to feed
> > >the system (13 to 45 psi depending on vehicle) & coming up with a way 
> to tie
> > >into the fuel rail. Biggest advantage I find with the factory units is 
> plenty
> > >of adapters.    Wallace O.
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