Sprinkler leaks broadly speaking appear as soggy spots, low strain, or bubbling at heads

https://rylanbpqa058.readspirex.com/posts/sprinkler-maintenance-list-for-every-season

Sprinkler leaks characteristically seem as soggy spots, low power, or bubbling at heads. Inspect risers, lateral traces, and valves, then fix cracked fittings to restoration approach performance.