fuel drain back...

[1974dodgecharger]

Noticed my fuel has been draining back faster and faster.  Before it took her a whole day to drain back, but now it takes like5 mins.  I can turn off the car and look at the clear fuel filter and see she is emptying and its obvious its going back into the tank of some sorts.

Now my question is what is causing this?  Bad fuel pump diapgram?

[John_Kunkel]

If the pump diaphragm was leaking you'd have gas in the oil. Oil level rising? Dipstick smell of gas?
More likely the check valve(s) in the fuel pump are leaking, no big deal since the fuel in the carb can't drain back to the tank.

[1974dodgecharger]

John

Thx will check into while i adjust my and ply and modify the throttle for next couple days.