I was cleaning paving stones and had been using it for about 1.5hrs and it just stopped mid clean. It will still pulse when turned on. The water hose was not blocked and the power cord was not kinked. I have noticed oil on the paving. It has always been stored upright and emptied out before storage and stored indoors. Have used it 3 times in total over 3 years for less than two hours each time. Is there anyway I can fix it, although I'm not very mechanical.
After buying the posts on here, I'm really sorry I bought a Karcher. Should I have paid less for an Argos one which sounds a lot more reliable.

Julie2011, April 2011

After about an hour of use, Pump stopped and the unit was making a buzzing sound. left for a couple of hours in case it was overheating and tried again but still buzzing. Water goes through and is back filling the little storage tank....HELP

Harry Hicks, March 2021

Meant to add that we put it away overnight in case it was overheated, but tried again this morning with same result. A little water comes out of the wand when water is connected. Slight pulsing when washer is turned on, then dead.

Julie2011, April 2011