100 series Subtank

[rcampello111]

Hi , I have a 100 series with Sub tank in Venezuela and lately my Sub tank has been draining almost simultaneously with Main tank , I ve taken down the check valve and cleaned it and its still using the gas even though im only using the main tank switch
anyone knows a solution for this? thanks

 

[uHu]

I see you get some help on mud, so that's good. Too bad the OZ forum is gone tho', as oem sub tanks are more common down there.