Hello, again a question about the popular valve theme. I have a MK4 (JAS) with the sewing machine (1.3 liters, 50 hp). It is now 10 years and has 170000 km down. It is to be driven at least 2-3 years. So far NEVER the valves have been adjusted. He still drives quite neatly (for 50 hp stop) and does not go too far. He is also not driven to the stop, even hardly on short distances. Now the question: Is it worth a visit? I have heard that the valves have changed again after a few thousand kilometers anyway. I am insecure, the car is cared for in itself, but I have only thought about the valves since I read so much about it here in the forum. Thanks and greeting, Hans