Then it ran, now it don't, part deux

[QuickAudi at aol.com]

stupid AOL.  It must hate me.

Joel
'90 V8q
'86 5kcstq

From:    L DC <ldc007usa at yahoo.com> 
  To:    QuickAudi at aol.com 


Hi QuickAudi!!

Do you own an '86 5kcstq?

I bought the same car about a month ago and wonder if
I can ask you a few Qs.

I'm new to this group but hope to get some support.

I bought a non-running '86 Audi 5KTQ. 

I bought the car from a used car dealership and was
suppossedly running when I first saw it last year
(Sept.) The car sat on the lot until all of the sudden
it was being liquidated and non-running.

I towed the car home, from Miami to Boca Raton, FL.

The engine turns and so does the rotor in the
Distributor, but no spark at the end of each spark
plug. 

A mechanic at the car lot said the previous mechanic,
who no longer works there, told him the car had a bad
ignition coil. 

I was told that I could use the ignition coil from my
VW Quantum Synchro on the Audi and did so but still
got no spark :(

I also checked the ignition hot wire in the ignition
coil that comes from the ignition switch (with
ignition switch on and also cranking it) and appears
to be in working order. So I guess the ignition switch
is OK.

Someone suggested that perhaps the car has a bad hall
sending unit in the distributor.

I located several Audis 5000 at the local junky but
non are  Turbo Quattro, thus have a distributor with
an vac. advance mechanism (little saucer to the side)
similar to that in my VW. My 5KTQ does not have such 
little vac. advance attached to the side of it. Also
the ignition coil on my 5K is unlike those non turbo
non Quattro at the junky.

However, I located a distributor from a 91 Audi 80 
that looks like that of my 5KTQ and wonder if they are
compatible even though do not share the same part
number.

Here are the #s in the distributors to determine
compatibility in both Audis.


On my 1986 5000CS Turbo Quattro
Z515 <----
0237522011
035905206 AF

On the Audi 80 manufactured on 11/90
Z515 <----
0237522015
034905505 H

Are they compatible?

The latter one seems to have been in good working
order since the car was hit on the right fender and
grill pushed in a little. Guess owner did not want to
spend money to get that relatively minor hit fix and
decided to junk it instead. 

Visually speaking, both dist. look similar if not the
same, except for the cap. 

And speaking of which, the coil on my 5K has three
little wires connected to it, one being the power from
the ignition switch I tested the other day. I'm
getting constant power coming ftom the ignition
switch, both with the ignition switch to the on
position and while cranking the engine.

There are two other green wires, which connect to the
opposite side of the power (hot) wire. On that same
hot wire side there is another little port to which
nothing is connected. I wonder if some other wire
should be connected there.

Would anyone happen to know?

Also if you do own a similar car, could you please
check to see if the distributor number on yours
matches that of mine?

In my 87 Quantum Syncro, that other available little
prong next to the "hot wire" has a wire connected as
well.

Separately, and although  I did not check it with a
proper fuel pressure tester, I disconnected the fuel
line that connects to the fuel filter and  with the
ignition switch on I got quite a flow of fuel jetting
out.

This Audi looks very nice cosmetically and
mechanically and would like to make it run, but don't
want to start pouring money into on things that might
not need replacing.

Upon closer look, I noticed that the car appears to
have had its head gasket replaced with a new one. The
radiator (manufactured in late 2001) also appears
fairly new, and its little mounts are for sure new,
judging from the shiny goldish metal.  

Someone suggested that perhaps the distributor could
have been misaligned? Could you shed some light on
that? How can I make it right, assuming that's what's
wrong with it.

I welcome you input.

Many Thanks In Advance!!!

-Louis