'86 4kq back to no start, CIS help please.
porter_dog at hotmail.com
Wed Dec 18 08:09:25 EST 2002
If I decide it's gotta go, I'll pull every part that I think I'd want and
donate the rest to charity unless some local lister is dying to own a
clapped-out and rusty 4kq with no interior/windows/regulators/fuel injection
:). I'll put it up here first as a matter of course, though!
>From: james accordino <ssgacc at yahoo.com>
>To: R Mangas <porter_dog at hotmail.com>, quattro at audifans.com
>Subject: Re: '86 4kq back to no start, CIS help please.
>Date: Tue, 17 Dec 2002 19:50:29 -0800 (PST)
>I can't answer your question, but God forbid you bave
>to dump it, please send it to a better home. Like Huw
>(always looking for another Audi) or Chris at Force 5,
>so it can be "recycled", Hopefuffly your loss (and I
>hope it's not) can be someone elses gain.
>--- R Mangas <porter_dog at hotmail.com> wrote:
> > As you may remember my 'perfectly reliable' '86
> > 4kq developed a stalling
> > problem last week. It would start normally, then
> > stall right away when the
> > CSV shut down. I checked the fuel pump delivery
> > rate (great), the system
> > pressure (normal), and the differential pressure
> > (exactly the same as the
> > system pressure, should have been 3-7 psi below).
> > Because it was convienient to do so, I swapped in
> > the differential
> > pressure regulator from my '87 and 'solved' the
> > problem for 150 miles. This
> > came to an abrupt end when I tried to leave work to
> > drive home yesterday.
> > The current problem is a _total_ non-start; it
> > won't even TRY to fire, not
> > even a little bit. Today I verified compression
> > (good) and spark (fine).
> > Checked system pressure (same as before, 79.5 psi;
> > in spec) and differential
> > pressure and found it to be 79.5 psi... Resistance
> > of the differential
> > pressure regulator is fine.
> > The next test is to check the return volume from
> > 'the lower chamber of
> > the fuel distributor'. There are two hardlines
> > coming off the fuel dist;
> > which one is it? I'd guess the smaller, as the
> > expected flow rate is low.
> > This test should implicate either the
> > differential pressure regulator or
> > the fuel distributor. Since the DPR swap seemed to
> > cure the problem last
> > time ([un]happy coincidence?) I sort of suspect that
> > might be the problem
> > now. What underlying condition would fail two DPR's
> > in quick succession?
> > I don't know enough about CIS to figure that out,
> > and I'm in a bit of a
> > spot. It's parked in staff parking in the office
> > building my company is in,
> > which will be fine for a couple days but too much
> > longer and there might be
> > some frowning going on. Also, I'm moving in two
> > weeks and don't have a lot
> > of free time to devote to a suddenly unreliable car.
> > If I can't get this
> > sorted and kind of quickly, I'll be forced to scrap
> > it :(
> > I've never done the t-belt, no idea when it was
> > done either- is there a
> > quick way to verify cam timing?
> > What about the damp-ecu syndrome- is there a quick
> > way to check for that?
> > Will the normal start/cold enrichment checks verify
> > ecu function adequately?
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