A pressure washer isn't like a regular water hose that you use, for example, on the dog, and so the PSI (pounds per square inch) can truly be the difference between cleaning something and damaging it.
It's more complicated than just "filling it up" — car tires have an optimal internal air pressure, and all sorts of things can get in the way of maintaining it.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results