Pat Norman
New member
Was cleaning concrete today and first noticed at the wand that the pressure was surging. I went over and watched the guage and it was surging between 3000 and 3500 psi with a pressure tip and the chem injector in line. When I took the injector out it didn't surge as much and eventually quit. Could this be engine related or pump related or either one I guess. How to narrow down the cause?