Sprinkler leaks oftentimes manifest as soggy spots, low drive, or bubbling at heads
https://threadvistax.com/s/YUE9KRJgOAaPKKi1LJ4eV
Sprinkler leaks broadly speaking happen as soggy spots, low tension, or effervescent at heads. Inspect risers, lateral strains, and valves, then restoration cracked fittings to fix device functionality.