re..no nice running of old 2.0 litre Audi 100 engine.

[Swann, Benjamin R. (BSWANN)]

This reminds me of several time I chased what I thought were fuel related
problems only to find after carb rebuilds and injector replacements that I
had ignition related problem.

I would assume the car has points.  Go there first - check/replace/clean
adjust.

It wouldn't hurt to do a quick compression test to make sure that is ok.

Don't start rebuilding your carburator just yet.

Ben
Cars & Boats all run crappy when the points or condenser and all connections
to them are not perfect!
*************

After a long time of standing the pistons don't seem to be 
corroded to the cylinders.. :-))
I injected some engineoil in the spark-holes on each 
cylinder (4 -pot engine, 2.0 litre, 115 hp, carburettor)
I cleaned the plugs and screwed them in again..
A freshly loaden battery attached: with the help of 'start 
pilot' stuff sprayed in the carburettor-venturi and some 
churning the engine ran.., drinking out of a jerrycan with 
fuel, as the tank has deposits in it.. ++Yeah you'll want to drain and flush
tank - your lines too.

But: I need to half-depress the throttle to keep it running: 
easing it let the engine stop..
As it doesn't seem an electrical problem (then it wouldn't 
start at all)  ++ not true!

BTW: on starting/running there is some backfire out of 
the carburettor-venturi (I saw real flames erupting!): this 
would mean the ignition is not set right??
I do have a flashlamp and revolutioncounter to regulate 
the 'schliesswinkel', but to do so the engine must be 
running on its own (about 950 rpm)..

+++Points - this sound just like the Boat with 350 Chevy I rebuilt Carb
after seeing I was getting spark.  Problem was it just wasn't at the right
time or consistant.