Changed oil in the pump and didnt notice any water. Put new oil in and didt notice any discoloration in sight glass. I removed my chemical injector via quick connects and bypass valve a couple days ago and went to go use the pw at my house and everything was fine. Today i went to reposition a hose and disconnected o e of the quick connects and noticed rusty colored water coming from hose after the pump. Any ideas what this could be....i havent notice any leaks from pump (ez4040g) and seems to run fine. Hose and pump are a kittle iver a year.