so i thinik i need to replace ether my coolent seals or my water pump. and i was wondering 1 how do i change the coolent seals? and 2 how do i do a pressure test?

 

You need a specific tool to do a pressure test, which I don't think you have. But a shop should be able to do a pressure test for you as a favor or for cheap. Than if you're leaking coolant from anywhere they'll be able to tell.

 

To change your coolant seals, you need to rebuild your engine.