Hi people, after the ZR change with my Scenic1 P2 with K4M engine inc. Change of the water pump, I now lose cooling water and can do all the work again. When the water pump was sealed, I was very careful and careful. The sealing surfaces were nicely cleaned and the sealing paste applied beautifully to the new WaPu. But the reality looks different. I left the car, after sealing and attaching the WaPu, for the first time a day (with water) After the first trip, however, you already saw that the water is coming out of the sealing surface. About 100ml of water loss comes to 100km. Sh…..! Does anyone have a good tip what I should consider the next attempt, or how I can control the tightness? I don’t want to do a third attempt. I could e.g. pressure with a compressor and a modified compensation tank lid on top of it. give the system, but then I would only have a static pressure at which the pump does not move and the engine does not vibrate. I am grateful for all the tips! Michael