Water flow problem

I haven't had time to tackle this problem until now but fortunately was able to fix it.
The culprit happened to be the hose which connects to the outflow of the waterpump. I had apparently damaged it by tightening the hose clamp too much.

Hollywood, I never try to dispute any advise given here, but am just trying to think for myself in order to learn more. Maybe it seems that way but that may be caused by my poor ability to express mysellf in english.

Thanks for all the help guys, I really appreciate it.

Quit assuming you know what you're doing and listen to the advise here and your engine will be running properly.

I've checked the impeller, its still fine.

Im still getting very high temperatures when idling (180-200). When revving up the engine to 2000 rpm it starts to decrease to around 140 and stays that way for some time. After a while it will increase again steadily. The impeller is new and I've tightened the strainer cap.

Classic backwards RWP symptoms. However, you still have a strainer gasket problem. Water should not be escaping the system even with the backwards pump.

If you're in front of the engine looking back at the pulleys and they're going clockwise you have a LH normal rotation engine and the pump orientation needs to be swapped so the screw head is in towards the engine.

Then your cooling issues will probably be solved

Keno, my pulleys are rotating clockwise. That would make the screw head facing outward?

I've double checked it. I can feel pressure building up when dragging water through the hose via my mouth, up untill the point I'm drinking water from the canals of Amsterdam. That should rule out any leaks I would say?

So I've been trying to tackle a problem for a couple of days now with no succes.
Water will not flow trough the engine/the water pump will not pick up any water;
I've replaced the impeller and checked all the hoses and strainer, 100% certain that there aren't any leaks there. The water pump is not upside down, I have a RH rotation and the bolt of the water pump on the outside.
When I hook up the garden hose pressure will build up and water will shoot out the edge of the strainer. When I try the bucket fake-a-lake method, water will not flow in but the engine pushes out air instead.

What is going on and what to do?