Spray heads not spraying or spraying weakly — clogged nozzle, bad pump, or pressure loss?

Weak spray or no spray comes down to one of four things, and telling them apart is the job.

- Clogged nozzles — the easiest and most common. - A failing pump — running but not producing pressure. - A pressure loss in the line, often a cracked or broken pipe underground, which is the one people do not think of. - A control or float problem upstream, where the pump is not being told to run correctly.

There is no reliable way to diagnose this from a description. It takes someone on site checking pressure and working back through the system. If your system is under a maintenance contract, this is exactly what that contract is for.

Reviewed August 2026. Links go to the sources this answer was checked against.