
Zitat von
Prometheus Looks like you have air bubbles enclosed in the radiator. Try flatten the radiator either by tilting your entire case or detaching the radiator from the case and rotate it to horizontal position. Because the tubes in the radiator are vertical and during the filling process the fluid speed was either to slow or air bubbles were in there, the top of each radiator tube contains an air bubble now. When you switch on the pump now each air bubble has to puch the next fluid column in the next vertical tube. Because air is compressable, a couple of those enclosed air bubbles is enough to dampen the pump pressure.