How can I diagnose faulty spark plugs in an Audi 80?

I have been experiencing engine misfires and I suspect my spark plugs may be the issue. What are the steps to diagnose this problem and potentially replace the spark plugs?

Start by checking for any visible signs of wear or damage on the spark plugs. If they look dirty or corroded, they may need to be replaced. Also, make sure the spark plug wires are securely connected. If everything looks fine, use a spark plug tester to check for spark. If there is no spark, you will likely need to replace the spark plugs.

Another common sign of faulty spark plugs is a rough idle or difficulty starting the engine. If your Audi 80 is exhibiting these symptoms, it is worth checking the spark plugs and potentially replacing them if needed. Remember to use the correct spark plug for your vehicle.