Looks like I have a different fault to this pulsing fault. Mine seems to more like pump is working one minute and not the next. For example, pulling the trigger and it’s like the using common garden hose. Then all of sudden the pump kicks in and it’s working fine. I managed to complete my tasks yesterday with a lot of frustration with this. It happen one of the previous times Iv used it this year, but just thought it was the hose that was kinked or even the extension lead. But I have swapped these out and the fault returned yesterday. Currently looking at the repair manual I have found online. Anyway thinking I might buy a new pressure washer when I get paid. Question is which one. I would like to a Kranzle but just to much money up front at the minute. I don’t want to spend any more than 250 really. I have seen Karcher K4 and K5 are both on offer at the moment. But have been put off by Karcher in the past after reading that they use plastic pumps and gears. Any recommendations?