replaced power booster on my wifes 85 crx and it now has bad vacum leak i take the vacum line off booster and stop it up engine runs smooth but brakes to hard for wife to push car has check valve in vacum line (a) replace check valve (b)replace master cyl and booster again ©trade wife for another one with better car but current wife/car are both on the cute side but if i hv 2
Replace the booster. If you just replaced it, it might be covered under a parts warranty and you can exchange it for a replacement.