Sand wizard Posted November 17, 2014 Report Share Posted November 17, 2014 so we have this old (90's) Cal Spa. We had it drained most of the summer. Recently filled it and got it goung for the winter. Seemed fine I thought but noticed this moring that the water lecel dropped severly! After further inspection and a little troble shooting i found this port inside the service area that was pouring water out! If you turn the pump on it would stop, turn pump off water pours out! Until it fets below the highest jet in the tub then stops. There must be a baclflow valve or something I need to fix? Any help out there? Thanks Guys! Quote Link to comment Share on other sites More sharing options...
Spa_Guru Posted December 6, 2014 Report Share Posted December 6, 2014 It is most likely an air intake, and leaks because an internal check valve has worn out, the simplest fix is to cork it with an expandable rubber cork. Quote Link to comment Share on other sites More sharing options...
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