How to check for engine problems in an Audi 80?

I've been experiencing some issues with my Audi 80's engine and I'm not sure how to troubleshoot them. Can someone provide some guidance on how to check for engine problems in this car model?

Hi John, when it comes to checking for engine problems in your Audi 80, there are a few things you can do. First, start by checking the oil level and quality. Make sure there are no leaks and that the oil is clean and at the right level. You should also inspect your spark plugs and air filter, as these can also affect engine performance. If everything looks good, then it may be time to take your car to a mechanic for further diagnosis. I hope this helps!