I have a 94 sonoma that wont stark its getting fuel and will run if you manually choke it what could it be

if it ran fine before this happened then check the fuel pump relay first. it may have shorted out when jumped off, or when battery was replaced

change fuel filter- if still rough- check catalyic converter

electronic choke failure look into that....

IS THE CONNECTER @ TOP OF INTAKE WHERE FUEL LINES GO IN FULLY SEATED SOUNDS LIKE INJECTORS ARE NOT GETTING SIGNAL TO FIRE

bad fuel cloged injectors

Try changing the fuel lines, if they are cloged from debris that could be the cause.

Did you check sensors such as crank senors? cam sensor? knock sensor? or mass air flow? Could all be causing it to get to much fuel. Just had same problem on 1997 Chevy Lumina

Pull plug wire and install a philips screwdriver into the plug wire get it 1/4 inch away from a good ground and crank the engine over, is there spark? if so check that you have fuel pressure buy renting a fuel pressure test kit from schucks or auto zone and turn the Key to run position with the gage hooked up, it should read 50 PSI turn key off and wait 20 seconds should still have 20 PSI of fuel pressure, if no fuel pressure check fuel pump relay, then check fuse to pump. if you have a bad relay and are not getting fuel then check the oil pressure switch to see if you have oil pressure at the switch if no pressure then the oil pressure safety switch has died and needs to be replaced and should stark after replacing. If you have fuel then check the timing to see if you slipped timing belt.

When was the last time the fuel filter was chg.? If thats not an issue best to get a fuel pressure test.

I have the same problem with my 95 blazer I have heard that it is the fuel pressure regulator. That is the next part I will be replaceing.

Good luck to all.

If any one finds any thing out please let me know!