I think there are two possibilities, you got air in the system or the unloader valve is not working. If it is air, it should quit doing that after you run it awhile. The other solution is to search youtube for something like "fix pressure washer unloader valve". There are plenty of videos on how to fix your pressure washer.
I think there are two possibilities, you got air in the system or the unloader valve is not working. If it is air, it should quit doing that after you run it awhile. The other solution is to search youtube for something like "fix pressure washer unloader valve". There are plenty of videos on how to fix your pressure washer.