Why does my Audi 80 make a ticking noise when I start the engine?

I just got an Audi 80 and every time I start the engine, there is a loud ticking noise. What could be causing this and how can I fix it?

You may be experiencing engine detonation, also known as engine knocking. This can be caused by low-quality fuel or incorrect timing. It's important to get your engine checked by a professional as soon as possible.

It could be an issue with your valve train, such as a worn camshaft or lifter. I recommend taking your car to a trusted mechanic for an inspection and possible repairs.

Check your oil level and condition. If it is low or dirty, it could be causing your engine to make strange noises. Try changing the oil and see if the ticking goes away.