Good day together. Since I’m new in this round I hope you can help me or us. I have the following problem with my Ford Escort 16 V 90 HP Bj.1998 with Zetec engine. The cooling water tank is “empty sucked” although the small overflow hose transports the cooling water back. The cooling water level is when engine is cold, at maximum. If the lid is opened carefully from the container (in case of warm motor ) and the pressure is lowered slightly, the cooling water comes back to the Beh The thermostat opens as it should, thus releases the large circle. I can only avoid the overheating in which I switch the air conditioning and heating regulator on hot. This was noticed when the car got hot (after 16 km also through tunnel uphill) and at a traffic light strongly viebrated as if it was only running on 3 pötten. Spark plugs were changed better idle but in cold condition very ruppelig. Of the old candle 3 pieces were white and one “oily”. Compression of all 4 cylinders were tested and found to be good. A leak of foams or components that have not been found for the cooling system as well as air conditioning. We are at the end with our Latin. I hope that one of you can help us. Please thank you in advance.