5ktq CIS problems still...

[John Forbes]

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?  I
>> >> > > think I saw it on Speed.  "Secrets of Speed"?
>> >> > >
>> >> > > Jim Accordino
>> >> > >
>> >
>> >
>> >
>
>