Hey guys i newly bought a 1987 Audi 4000cs quattro. The car is tornado red with 139,000 miles. Everything works, and is pretty clean thoroughout. The only thing is this idle problem. The car starts up and runs, but runs rough and when given gas, it cuts out. I am looking into a fuel filter first. The car runs so its not the fuel pump. Possibly clogged injectors???? Worst case scenario is i need to rebuild, clean or replace the fuel distributor, hopefully no tho.... Any ideas or suggestions would help. Also this is my first audi that i have bought( mom owned many and driven most of hers), what should i look for as to things to go wrong or break at this point in time? Thanks everyone. Will post pics soon!