Hello your specialist, have changed the ZKD at my Clio 1. After a short time I found that it is not running as spritzy and “drys”. I checked the control times again, correct. After the replacement of the cooling water sensor it went a bit better. It starts great, runs well in cold condition only it does not get so splashy on tours. However, I did not set any valves. Newly installed at the ZKD change were: spark plugs, air filters, head screws, thermostat u And this sensor. My workshop meant control times, but I checked 2 times. Overtaking has now become very risky. Oh, the spark plug image is from deer brown to almost grey / white. I am grateful for everyone’s advice, because I have 50 km to work and now I have been driving 1700 km since the change. Thanks to all screwdrivers and specialists.