F Firefighter Well-known member Joined Dec 31, 1969 Messages 303 Feb 5, 2025 #2 alara26 said: Click to expand... Sounds like it is sucking air / cavitating in the pump, suction hose bad or clamps or fittings loose, or suction screen has debris blocking flow. cold temperatures or hyd oil is wrong viscosity, does it get better after oil is warmed up?
alara26 said: Click to expand... Sounds like it is sucking air / cavitating in the pump, suction hose bad or clamps or fittings loose, or suction screen has debris blocking flow. cold temperatures or hyd oil is wrong viscosity, does it get better after oil is warmed up?
