Servus, unfortunately I am a computer freak and I have almost no idea about my car. I have a 92 polo Fox 1.0l with 33KW, 5-speed and the following problems/questions: 1. My engine stutters, roars and vibrates after the laser and does not accept gas. I then always have to drive at high speeds so that the moter does not run out in slow curves. What is this ?? I brushed off the spark plug contacts and the other end is also ok. Air filter I get a new one soon. this problem only if it was wet now every day in the morning and sometimes even on dry afternoons. 2. My FoxPolo has no rev indicator, can you just install the one from another polo or does it have no speed sensor ? 3. How do you actually make an oil change with this car? I can wait PCs, repair,.. but cars are new ground 4. almost forgotten ? I had to lower my air filter to clean the spark plug. Can I take it all off and get up again The bottom cable/hose I put on, because I don’t know if you can get it on again without tools/seat material? Many thanks for the “merciful” who takes care of me. Thank you Drago