Sprinkler leaks commonly manifest as soggy spots, low force, or bubbling at heads
https://holdengwsp349.trexgame.net/top-10-sprinkler-repair-tips-every-home-owner-should-know
Sprinkler leaks many times happen as soggy spots, low stress, or bubbling at heads. Inspect risers, lateral strains, and valves, then restore cracked fittings to restoration machine performance.