5ktq CIS problems still...

Wed Jul 23 08:19:28 EDT 2003

The way I see it, if the accumulator or it's lines are
restricted in any way, then the pressure and delivery
volume at the fuel distributor would both be low.  The
pump is dead headed some where.  I bet if the pump and
strainer are new/good and you put a gauge at the check
valve atop the pump it'll be real high.  If you try
the line into the acc. from the pump, you can also
eliminate that as well.

Jim Accordino

--- John Forbes <John at craincorporated.com> wrote:
> I havent done an official flow test, but when I
> drained the tank (by pumping it out) it filled a 5
> gallon container in no time flat. When I move the
> airflow plate the pressure stays solid at 4bar,
> never drops at all, but book spec is 5.something
> -6.8bar.
>
> I went under the car to check the accumulator and
> only found a ball of rust. I took it off and ordered
> a new one, but I gota wait until tomorrow morning.
> One thing though, if the accumulator was clogged
> wouldnt I get too high of a pressure rather then too
> low? None of the lines are hurt either.
>
> -Cody
>
>
> ---------- Original Message
> ----------------------------------
> From: "Bernard Littau"
> <bernardl at acumenassociates.com>
> Date: Tue, 22 Jul 2003 11:24:34 -0700
>
> >Hi John,
> >
> >Sounds like your fuel _flow_ is a problem.  Have
> you done the fuel flow
> >test?
> >
> >I realize that with a new fuel filter and a
> replaced fuel pump you have
> >already addressed the two most likely reasons for
> poor flow.  Still, it
> >sounds to me like the pressure is dropping as the
> flow increases, to the
> >point where some of the injectors shut down.  They
> are supposed to do that
> >to maintain pressure when the car is off.
> >
> >You may want to inspect your fuel line from the
> filter back to the pump and
> >see if there are any imperfections; perhaps the
> line is crushed somewhere.
> >The fuel accumulator is also outside of and under
> the car near the right
> >rear wheel.  Perhaps it is clogged.
> >
> >Best,
> >
> >Bernard Littau
> >Woodinville, WA
> >'88 5ktq
> >
> >> -----Original Message-----
> >> From: John Forbes
> [mailto:John at craincorporated.com]
> >> Sent: Tuesday, July 22, 2003 6:57 AM
> >> To: Bernard Littau
> >> Cc: quattro at audifans.com
> >> Subject: RE: 5ktq CIS problems still...
> >>
> >> Isn't CIS a problem in itself ;-) ? Well it goes
> like this. I bought the
> >> car over the net, from a couple in Nebraska.
> Original owners, wifes car
> >> (nice to know it wasn't beat too bad), husband
> did regular maintenence.
> >> They said it ran great, and they seem pretty
> honest about the whole deal,
> >> were more then willing to tell me everything that
> wasn't right on the car
> >> as much as whatever was good.
> >>
> >> >From the minute it got here it has had a problem
> with runability. It
> >> seemed that anytime you open the throttle enough
> to get to about .9bar it
> >> would drop to maybe 3 cylinders. I called the
> people I bought it from they
> >> said it had been sitting a little while, so I
> figured bad gas. I pumped
> >> out the tank and changed the filter, got some
> water in the old filter too.
> >> But it didn't fix. So I put the fuel pressure
> gauges on it and got about
> >> 4bar. Thought this was low but was unsure so I
> pulled the injectors and
> >> lifted the airflow plate, got good flow at low
> positions, but as I raised
> >> it some injectors would stop firing. This is
> where I'm stuck.
> >>
> >> I started by swapping to another fuel dist. that
> came off a running car,
> >> and that didn't help any. Then I noticed that it
> wasn't keeping the
> >> controll pressure low when it first turned on, so
> I changed the warmup
> >> regulator. That didn't help, but then I noticed
> that every time I would go
> >> to work on the car I had a little bit less fuel
> pressure. I started by
> >> double shimming the piston spring in the fuel
> dist., which got me up to a
> >> good clean 6.4bar, but again it started losing
> pressure. I went to change
> >> the pump and got a good surprise as the car had
> been "upgraded" to the 200
> >> 40mm pump, which is $50 more expensive then a
> $200 60mm 5000 pump. I had a
> >> 60mm pump here so I retrofitted it back to the
> older pump, and still only
> >> have arround 4 bar of pressure. Also all 5
> injectors flow fine on my test
> >> bench, but for good luck I even bought 1 new one
> and put it on. I had
> >> basically given up on it and just decided to park
> the car until my new
> >> injectors and rail stock get here so I can c!
> >>  onvert it to EFI like my last 5k, but I am
> supposed to go to a wedding
> >> this weekend and thats my only "running" car that
> I can take.
> >>
> >>
> >> -Cody
> >> '86 5ktq - Still having CIS problems
> >> '88 80 4cyl
> >>
> >> ---------- Original Message
> ----------------------------------
> >> From: "Bernard Littau"
> <bernardl at acumenassociates.com>
> >> Date: Mon, 21 Jul 2003 16:52:01 -0700
> >>
> >> >Hi John,
> >> >
> >> >I've been a bit sporadic following the list
> lately.  What kind of CIS
> >> >problems are you having wit your 5ktq?
> >> >
> >> >Bernard Littau
> >> >Woodinville, WA
> >> >'88 5ktq
> >> >
> >> >> -----Original Message-----
> >> >> From: quattro-admin at audifans.com
> [mailto:quattro-admin at audifans.com] On
> >> >> Behalf Of John Forbes
> >> >> Sent: Monday, July 21, 2003 4:27 PM
> >> >> To: quattro at audifans.com
> >> >> Subject: Re: was: brit gp now: people on track
> >> >>
> >> >> I have a video called "Secrets of Speed". Its
> from the early '90s. The
> >> >> beginning is a bit messed up because the tape
> wasn't stored well, but
> >> >> theres
> >> >> no cars on the Autobahn that I've seen. It
> does however have GREAT
> >> footage
> >> >> of the type 44 at Talledega, the Trans Am
> cars, and the IMSA cars. Also
> >> >> some
> >> >> really great interviews with Hans Stuck.
> Actually now that I remember
> >> the
> >> >> beginning even has rally footage, including
> Pikes Peak, and that
> >> section
> >> >> is
> >> >> full of interviews with Michelle Mouton. Good
> stuff. I wish I had the
> >> >> equipment to digitise it and post it on my
> server for whoever to see.
> >> >>
> >> >> -Cody
> >> >> '87 5ktq - Still having CIS trouble
> >> >> '88 80 4cyl
> >> >>
> >> >>
> >> >> > > Date: Mon, 21 Jul 2003 08:32:22 -0700
> (PDT)
> >> >> > > From: james accordino <ssgacc at yahoo.com>
> >> >> > > Subject: was: brit gp now: people on track
> >> >> > > To: Wylie Bean
> <TheRingmeister at triad.rr.com>, quattro at audifans.com
> >> >> > >
> >> >> > > That guy has serious issues.  Does anyone
> remember a
> >> >> > > video of 3? track guys trying to cross the
> main
> >> >> > > straight at Malaysia?  As cars approach at
> 200+ mph?
> >> >> > > 3rd person doesn't quite make it and
> becomes about 3'
> >> >> > > taller as he flies through the air.
> Gruesome stuff.
> >> >> > > Also, what's the video with Audi on the
> autobahn
> >> >> > > driving really fast from late 80's to mid
> 90's?
=== message truncated ===

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