I’m trying to find out what’s going on with my cobalt so far I think it is either fuel pump or injectors as codes are all fuel related and says they are running lean I put a pressure gauge to the rail I put it to the on position it goes up to 24 psi and drops shortly after I start it and it rises back to 24 psi and stays there wondering if anyone knows what the pressure is supposed to be at as I can’t find the spec anywhere

 

fuel pressure is supposed to be 58 psi. you either have a dead pump or a stuck open regulator. either way you gotta pull the tank.

 

What about a cobalt having 52-54 psi ? As mine currently have that ?