New member with bad problem

[Tigran Varosyan]

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. Also, what does DPR stand for?

Thanks,

Tyson



-----Original Message-----
From: R Mangas [mailto:porter_dog at hotmail.com]
Sent: Monday, November 25, 2002 3:46 PM
To: tigran at tigran.com; quattro at audifans.com
Subject: RE: New member with bad problem



IIRC you said you've got an '85.  My bently lists the following pressures
for 1985 5cyl CIS-E:
System:  75-81psi
Differential pressure:
    connector off differential pressure regulator: 3-7psi below system
pressure
    connector on dpr, ign on, 15kOhm resistor across temp sensor: 10-17psi
below system pressure
    Holding pressure(leak test) after 10 minutes: 38psi

  another interesting bit:  dpr resistance: ~17.5-21.5ohm

Finally, here is the list from the bently of things to check if 'engine
starts ok but then stalls':
1.  System pressure outside of tolerance (hmmm.....)

2.  Differential pressure outside of tolerance

3.  Unequal injection quantity

4.  Idle setting wrong (idle speed regulator, lambda regulator)

5.  Pressure regulator diaphragm, defective

6.  Function 'warm-up enrichment' out of tolerance

7.  Function 'after start enrichment' outside of tolerance.

  Let me know if you want more detail on any of the above; I'll be in and
out all night.

Robert





>From: "Tigran Varosyan" <tigran at tigran.com>
>To: <human747 at attbi.com>, <quattro at audifans.com>
>Subject: RE: New member with bad problem
>Date: Sun, 24 Nov 2002 20:31:16 -0800
>
>Questions:
>
>How do I get the injectors out? The worthless Huntley manual I have just
>says (I kid you not) "remove the injectors". I cannot find anywhere how
>they
>are supposed to come out! I can see a nut which is very hard to get to
>(with
>an O2 style socket maybe?) but was able to get to the #1 cylinder injector
>with a wrench, turned it for a while, didn't seem like it was going
>anywhere. Tried just gently pulling on it via the braided hose, didn't come
>out, I can feel that its lose though...
>
>I bypass the fuel relay by supplying power directly to the proper terminal
>in the fuse box. Nothing wrong with doing that right?
>
>Yes, I checked spark, spark is good. FYI I was amazed how strong my coil
>is.
>Saw a spark from the coil arc a distance of over 1 inch!!
>
>And yes, I just did test the fuel pump with a T-connector. Still showing
>SUPER high pressure.
>
>Thanks for the injector advice. I have been wanting to do that, I just cant
>seem to get the thing out!
>
>Tyson.
>
>-----Original Message-----
>From: Huw Powell [mailto:human747 at attbi.com]
>Sent: Sunday, November 24, 2002 8:15 PM
>To: Tigran Varosyan
>Cc: quattro at audifans.com
>Subject: Re: New member with bad problem
>
>
>Try this...
>
>fuel system all returned to its rightful place, but intake rubber boot
>left off for now
>
>fuel pump relay bypassed so you can turn it on manually
>
>pull one fuel injector... carefully
>
>point injector into safe container
>
>turn on fuel pump
>
>gently, slowly, raise air plate from its rest position.
>
>injector should spray fuel.
>
>Your original symptoms indicate that something is preventing this, in
>that your car runs either on the small amount of fuel delivered by the
>cold start valve (injector), or on a residual pressure leftover from the
>"on" position prior to cranking, or cranking.
>
>if this works (I take you checked for spark long ago), see if something
>is stopping the fp from running (although since its a loud one I suspect
>this is not the problem).
>
>you measured fp pressure, and you observed a strong flow... but you
>haven't done both at the same time, ie measured its flow at pressure.
>
>and please, be very very careful with all this gasoline open in the air
>- hopefully you are working outside, at least.  if you're in a garage
>(with the door open!), try to avoid accumulating gasoline stink inside
>by putting excess fuel back in the tank and the empty containers
>outside.
>
>There should be a rather schematic vacuum routing diagram stuck under
>your hood.  Hook it all up properly... if your car was running with all
>those wrecked hoses, who knows how far off from "correct" it was tuned
>to do this.
>
>--
>Huw Powell
>
>http://www.humanspeakers.com/
>
>http://www.humanthoughts.org/


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