must find a way to get home without fuel regulator:100Q fuel prob

[Denis]

Finally the vacuum is OK. there was a units problem only. Its 9.5 psi or 20
inchs Hg as any normal idling engine.

If i can trick the fuel distr. (push with my hand)and shoot fuel to the
cylinder then why when i crank it it does not shoot ??? (it s more a comment
than a question Frederick)


Denis

----- Original Message ----- 
From: "Frederick Smith" <smitty at pcrealm.net>
To: "Denis" <sparkplugvw at hotmail.com>; "AudiFans List"
<quattro at audifans.com>
Sent: Wednesday, December 22, 2004 7:19 PM
Subject: Re: must find a way to get home without fuel regulator:100Q fuel
prob


> Vacuum makes it work, the engine is an air pump................ as the
> pistons move down
> they draw in air, through the air filter , lifting the air damper plate.
> The air damaper plate
> moves the valve in the center of the FD and the injectors "squirt".
> There isn't any way to
> operate the injectors without lifting the plate, that is how it is
> supposed to work. If it
> doesn't move ("lift") when cranking, then there is a massive leak
> somewhere in the
> intake tract, the valve timing is off, there is low compression etc.,
> etc. Of course if you
> have low fuel pressure...............even if the air damper moves, the
> pressure may not be
> adequate to operate the injectors.
>
> A methodical, step by step diagnosis will find the problem
> (and it seems there are a FEWdifferent ones in your case). Get the
> vacuum system "tight",
> then fix the fuel pressure problem. When that stuff is up to par you
> might have a chance at
> a total fix, not much hope before that IMHO.
>
> Smitty
>