I have a 95 Corsica 3.1l and will not start has 35 to 42 psi fuel pressure and is getting good spark. I can spray starting fluid into the air breather and it will bust off just for a sec. what make the inj pulse I have a set of node lights but I was getting to try another route first seeing how I have to take the upper intake off to get to the inj. to check for pulse. if a sensor or something else I can check first that makes them pulse I would like to know.