what would cause a 1990 buick century v6 3.3 4dr sedan from getting fuel when I have replaced the fuel pump, strainer fuel ,inline filter, computer, control module ,battery. It starts when I pour gas through the intake, I have 48 lbs of pressure at the fuel regulator test valve. Some how fuel is cut off. Could the Mass air flow sensor fuel injection idle air control valve or throttle position sensor be the problem. When I opened the line before and after the fuel rail gas leaks out. The weird part is that when I turn the key on my check engine light does not come on. The fuse up front and relays are also good. Fuses in glove box are also good. Whats left? Help 418john@mail.com This car does not have a map sensor or inertia cut off switch.