Coupe Quattro 20V Carbon Fouling Plugs

[Brett Dikeman]

On Fri, Sep 11, 2009 at 6:29 PM, Ben Swann <benswann at verizon.net> wrote:

> Basically what you are saying is what I meant sort of - somehow the FPR fails and dumps
> too much fuel in.  I can certainly see how a seal in the regulator fails or leaks in
> such a way as to dump fuel directly into the head, particularly if the injector seal
> allow for fuel to leak by or to pull fuel through the vacuum control port - which  now
> as I recall is how I think the failures I mentioned earlier were occurring.

I think the giveaway is that fuel is pooling in the IM.  I can't think
of how that could possibly occur from a leaky injector, even if the
Hitachi injectors are known to be junk.  And it's definitely not
normal.

I think the leaky FPR was an issue on V8's as well, causing some fuel
hydrolock in some cases, which is a definite bummer on that engine...

Other Brett: after you get this straightened out, I definitely
recommend running some Seafoam through to clean out the combustion
chambers etc...

-B