need help with testing adjustable bbk fpr

[james87gt]

i have no vacuum leaks the pressure bleeds right off after i turn the engine off its done that since the regulator was new so i don't know if that's just the way its made. i just need to know if it should hold vacuum when i pump it up because right know i just pump it up to like 20 and it just bleeds right down and doesn't change the fuel pressure from 0 that's with the engine off key on and does any one know what size fitting i need to hook a fuel pressure gauge up to the schrader valve im going to try the stock regulator but right now the gauge is hook right up to the regulator thanks for you help