5ktq CIS problems still...

[Dan Cordon]

It seems to me there there must be something plugged in the system. I
would start at one side of the system and track it back from there. For
instance, pull the injectors and manually lift the plate to see which,
if any, have adequate flow and pressure. Then pull off the injectors and
run the same test out the end of the lines. Then at the fuel
distributor. Take measurements at the outlet of the fuel filter, then
inlet.....just work back until you find the location of the blockage.
It's certainly not a fast method, but should give you lots of data about
the problem.

And of course, you could start at the fuel pump outlet too and work
forward....

--
Dan Cordon
Mechanical Engineer - Engine Research Facility
University of Idaho

> If any one has any suggestions on the problem I am having the exact same
> symptoms on my '86 CGT with CIS-E I have replaced the fuel pump, fuel
> pressure regulator, fuel filter, fuel injectors, drained the tank, replaced
> the lines, and am still not having good luck, I have had the problem for
> over a year.  The car has been sitting all summer now due to its lack of
> reliability, it sometimes will run if I hold the throttle wide open, and
> juice it along with the cold start valve over ride I installed.  The static
> fuel pressure is good, but it loses pressure as the engine runs, after only
> a couple of seconds, the fuel pump is still running.  I want to be able to
> drive the car, as right now I am without a running Audi.
>