I bought a #Karcher K4 a few years back. Almost immediately, one of the pieces broke and I got a leak. It's an elbow where the gun connects. If you look it up, you'll find plenty of videos of people fixing the exact same problem. And Karcher even remade this piece in metal, so I thought that was it. Yet, I got another problem recently, leaking from the inside! I opened it up and it's the piece were the elbow I swapped connects... I thought Karcher was a good brand, I was wrong..