Using the hose pipe to wash my car the water from the gun slowed, thinking the problem was the gun itself i bought a new one which worked fine for 2/ 3 minutes, having taken off the new gun, and using my finger on the end of the hose a lot of black slime is coming out of the hose, obviously this crap is blocking the gun, and maybe my in house taps too, which are running slow, but then again they have always run slow, despite checking the filters