Works after priming, then fails
This often suggests the system is not holding water in the suction line or pump body.
Pump prime problems
Well pump loses prime in Port St. Lucie?
If a jet pump or irrigation well pump works after priming but loses water again, the issue may be an air leak, check valve, suction line, foot valve, or pump problem.
Common prime-loss clues
Air bubbles or sputtering
Air in the line can point to suction leaks, fittings, valves, or well supply issues.
Irrigation zones fade out
Sprinkler pressure that fades can come from pump prime, leaks, clogged filters, or well output problems.
Jet pump prime loss
A pump should not need repeated priming under normal sealed-system operation.
When an above-ground pump loses prime after shutting off, water may be draining back through a failed foot valve or check valve, or air may be entering through suction fittings, pipe damage, a seal, or the priming plug. A low source-water level or restricted intake can also prevent the pump from establishing reliable flow.
Report how long the pump holds prime, whether the pressure gauge reaches normal shutoff, whether air appears at faucets, and whether the problem began after plumbing work, drought, irrigation demand, or a power interruption. Avoid allowing the pump to run dry while repeatedly attempting to prime it.
Loses prime while off
Drain-back through a valve or an air leak on the suction side is more likely when water disappears between cycles.
Cannot establish prime
Air leakage, insufficient source water, blockage, incorrect valve position, or pump wear can prevent initial water movement.
Prime holds but pressure is weak
Pump output, restrictions, leaks, tank behavior, and system demand should be evaluated after suction integrity is confirmed.
Service-review standard
What should be pressure- or vacuum-tested
Repeated prime loss should lead to inspection of the priming plug, pump seal, unions, threaded fittings, suction pipe, check valve, and foot valve where accessible. A technician may need to isolate sections or use pressure or vacuum testing to find an air path that does not visibly leak water. Source level and intake condition should be considered when the suction path tests tight.