You have trouble starting your 1987 Audi 4000 quattro cs when engine is cold?

If your 1987 Audi 4000 quattro cs has trouble starting when cold, it could be due to a few factors. Common issues include a weak battery, faulty spark plugs, or problems with the fuel delivery system, such as a clogged fuel filter or failing fuel pump. Additionally, check the cold start injector and the coolant temperature sensor, as these can affect cold starting performance. Regular maintenance and inspection of these components can help identify and resolve the issue.