another car wont start/IDLE/flodding issue
 

hi guys!

first, YES, i've searched... but haven't found something helpful...

Issues with my 1987 s4 NA:

Floods heavy while starting (only starts after crank it trough for some minutes with my fuel pump kill switch + fresh battery or another running car)
don't holds IDLE

the car has good compression (checked), drives fine and accelerate like it should...

the problem occourd suddenly after a run on the track... on the track it was fine, when i got off the track the problem started...

any good tipps (without testing everything) would be nice...
thanks in advance

I found on my 88 N/A that after one good flood, it was more prone to flooding again until I replaced the plugs.