Update (WAS: New member with bad problem)

[rob hod]

    Tigran,
    Just one point that occured to me concerning the fuel pressure. I
beleive you said you were measuring it at the feed to the fule dist. If so
you are measuring the wrong way, and just getting the 'max' pressure the
pump can supply, and possibly damaging the pump.

    To meaure the system pressure (which is regulated by a pressure release
valve) you usually need to insert your gauge into the control pressure
circuit and take a reading there with the pump running but the engine off
and with the outlet tap of your gauge closed.

    I don't have the time right now to elaborate, but maybe this will point
you in the right direction for a pressure reading and others can help
clarify for you. Good Luck.

rob
> Message: 14
> From: "Tigran Varosyan" <tigran at tigran.com>
> To: <quattro at audifans.com>
> Subject: Update (WAS: New member with bad problem)
> Date: Tue, 26 Nov 2002 01:42:04 -0800
>
> Hi Huw. I have been trying things suggested. Tonight I have just been
> reading information from emails getting some clarification on a few
points.
>
> I went to test the injector like you describe (pull it out, bypass the
pump,
> move the plate up and down) Sounds like a great test, cant belive I didnt
> think of doing it myself.
>
> Went to do that today, and found that the fuel pump which was working
great
> and cranking out 110+ PSI just the other day (with some horrible loud
> noices) is dead. Like a brick, nothing at all. Took it out, hooked it up,
> can feel it jitering in my hand a bit but certainly not spinning/pumping.
> Not sure if this is a new problem or the cause of the whole ordial.
>
> Local dealer was out of stock on the pumps and as I mentioned I am home
> bound without a car so I need one NOW. Called Junk yards, nobody had
one...
> Called Schucks, picked one up for $170. Went to put it in today and did
not
> get done as it was freezing cold outside... Going to do it first thing
> tomorrow and do the injector test.
>
> Far as filters,
>
> Fuel filter -- Changed.
> Air filter -- Changed.
> Fuel tank Pre-filter -- I assume to be very OK as I got dranched by VERY
> fast moving gasoline out of my tank when I removed my fuel pump (yes I had
> it pinched off but the clamp fell off when I yanked to get the pump out).
> Gasoline -- Not old. Filled up just last Monday and have used up about 1/4
> of the tank before the car died.
>
> The PCV hole that a few people mentioned (the one in the back of the
rubber
> trunking on the bottom side by the battery). Few people suggested hooking
> that back up. I am trying to elliminate any possible secondary problems.
The
> hole is plugged on the rubber hose with an air-tight plug. I want to make
> sure that a faulty PCV valve or fuel vapor cansider is not messing thing
up
> by allowing a large ammount of un-metered air into the engine. From what I
> understand of the system with that hole plugged as it is now, the engine
> should run.
>
> The Vac line diagram you have (and Huw let me please say that your site is
a
> SAVIOR of my sanity) is close to my configuration but is not exact. Few
> connections are different and I am not sure what/where a few of my devices
> are. For instance the vapor canister, I have no clue where it is. I have 2
> hoses coming out of pass side fender that are a mystery to me. Also the
> little vac sensor on the side of the distributor, I think there is
something
> wrong with it. I hooked up a rubber line to it then blew and sucked to see
> what it did... The air went right through it... Not quite sure what to
make
> of it... Ether way that only adjusts the spark timing a few degrees when
> cruising for better fuel economy, right? #138 problem on my list at the
> moment :)
>
> Obviously I have put the fuel distributor back together (wish I talked to
> you guys before I tore it apart) it did not seem at all complicated... Few
> i-bolts a plunger etc. I could not get the actual corpse open, maybe for
the
> good... Anyhow, its back on the car, nice and clean and ready for
action...
>
> I will keep the group updated as to what happens tomorrow.
>
> Thanks for all of the advice and help.
>
> Tyson
>
> -----Original Message-----
> From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
> Behalf Of Huw Powell
> Sent: Tuesday, November 26, 2002 1:11 AM
> To: Tigran Varosyan
> Cc: quattro at audifans.com
> Subject: Re: New member with bad problem
>
>
>
>
> > Some procedures on where to tap into the system and what pressure should
I
> > see at those points would be great. So far all I tapped was the fuel
line
> > coming into the fuel distributor.
>
> Tigran,
>
> If I can try to put this nicely... many of us have suggested many
> different, often quite easy, tests to perform.
>
> before it makes sense for us to try to keep going, we need reports on
> those tests...  I realize I can't speak for anyone else of course, it
> just makes sense to phrase that sentence that way.
>
> I know it is tough to pull an injector, but you have to do it.  Be
> careful, get one out, and see if it sprays under the conditions
> previously described.  Change your fuel filter and air filter.  There is
> a vacuum line diagram on my website, I think, that is probably
> moderately accurate.
> (http://www.humanspeakers.com/audi/vacuum-system-E.htm)
>
> many of the tests have only required ohm meter type work, have you done
> them?
>
> Don't worry about understanding the whole system all at once, first,
> let's try to get that car running and go from there.
>
> Most of the things people have mentioned are the most common things that
> will go wrong with your car.  many of the people trying to help have
> owned several of them.  The fuel distributor itself is an unlikely
> culprit.
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/
>
> http://www.humanthoughts.org/
>
>
>
> --__--__--
>
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro
>
>
> End of quattro Digest
>