GPWRI
New member
Hey, i started up my pressure washer the other day to check it out before a job and it sounds like it doesnt stop building pressure. I start it up and you can hear it building pressure and i give the gun a few sprays to let some pressure out and it never stops building pressure is what it sounds like. The motor seems to always be under a load? Think it is the unloader valve?? its a pressure pro honda gx390 motor with a general pump. 5.6gpm 2600 psi. any ideas???