My car wont start. It will not start, before it cut off i got a code 43 = Fuel supply then it sputtered and bogged really baddly. I have a new walbro 255hp fuel pump. I took off the fuel rail with the injectors connected and let them sit out on top of a cloth to see if they are sprayin. Only injector #4 is spraying and the others have barely anything coming out. I wired the resistor box exactly as specified, I have no idea what it could be

 

Code 43 is usually the o2 sensor, but from the sounds of ur problem I'd say theres a good chance it's something with the fuel pump, make sure all the wiring is right,double check it, and hopefully the fuel pump isn't defective.