Great info Benny.

Benny boy wrote:
> Yo...
>
> Well no pictures this time.
>
> So, lately a have seen a rare problem, an engine filled with fuel in an
> "hydro-lock" state (that is the problem, not so rare, but wait!), so, i
> procede slowly expecting a fuel injector failure (it did happen to me twice
> lately) but injectors leaks but don't fail...that much... so Ok!
>
> So i start by a FI pressure test and i got nothing, ok, pinch some hoses one
> per one, nothing? so i pinch the main line from the pump, after the T
> junction where you plug the FI pressure gage, pinch each side... paff,
> pressure climb fast to 100psi, so ok, the pump old pressure and is working...
>
> of, i remove the right fuel rail with the injectors on it... fuel is pooring
> through the fuel injectors hole in the intake... #1 is worse???? ok, i check
> the injectors...fine??? so, the short version, i unplug all injectors from
> the engine (that mean no more fuel inside...) run the pump manualy
> (Digifan), each time the pump runs... fuel is pooring out of those hole???
> EVERYTHING as been disconnected (i thought!) I'm amazed (and tired), so few
> other mechanics comme and look at the problem, all are amazed and
> wondering??? but one look at the FI rail, connection system from another
> point of view and... he pull the vacuum line from the Fuel pressure
> regulator on top that goes to the air-plenium... and vlaannnnnn.... fuel is
> pooring from the vaucum side of the regulator, the only line that was still
> connected to the intake/engine....
>
> Conclusion, fuel regulator failure, basicaly it cracked inside, broken,
> kapout!!! so, if you ever see a big engine flooding (fuel), pull that small
> vacuum line
>
> The thing is that i had no sign of a leak, nothing around the nipple, hose
> was hold and barely holding to the vacuum...
>
> Cheers, Ben
> http://www.benplace.com/vw2.htm
>
>