Wont Start Unless You Pour Gas Into Throttle Body

[gotdust]

i have a 93 chevy pickup with 350, i am getting gas all the way up through fuel lines to back of throttle body, i am also getting power to injectors but truck will not start unless i pour gas into throttle body as soon as it uses it up it quits please help. thanks

[luminaapv3]

I'm taking an educated guestimation here , but i would suspect the fuel regulator to be at fault or a blockage within the TBI.

One other thing to check is the linkage going to the TBI, when you push on the gas pedal does that linkage move?

Also just as a note, if this Throttle body has never been cleaned out it might be worth your time to take it apart and and clean it all out . I just got done doing it, all the vacuum ports and passageways where clogged . This was on my 93 burb with the 5.7 liter (350) engine.

It doesn't take that long either and all you need is a few gaskets, matter of fact Autozone has a gasket kit for this for like $7.00, but make sure your kit comes with 2 injector filters, mine only came with one! Had to order the other one.

Also note if the regulator is bad, you have to replace it, DON'T open it, there is a loaded spring inside under a lot of pressure. I think this part costs about 80 bucks if I remember right.

Good luck.

[GMTRUCKTECH]

What is your fuel pressure at the throttle body? You could have fuel there but not enough pressure. Also you injectors could be open try tapping on them while someone cranks the engine.