When I used it a few weeks ago the pump was making some terrible noises. I think since it was the first time I used the hose it was getting inconsistent water flow. When I tried to use it again to wash the car for C&C it wouldn't even turn on. The GFCI was lit green. When it met the concrete with maximum force to test the integrity of the plastic case, it failed and I tossed it.What happened? No power? Try bypassing the GFCI plug (if it had one). That's what happened to my Ryobi.