Background, 2002 Buick Century limited, 3.1. 120k miles, recent new starter, battery, crank sensor on back of block, fuel pump approx 2 years ago. Only codes are P0135 both in codes and pending. Fuel pressure reads 50-51 koeo, when I do get it started, 52lbs. The car will take run fine for days, then a no start. Will crank fine, seems to spin fast. Good spark. I Cannot get to the injectors to check for pulse, or at least I do not know how. I can pull the intake hose from the throttle body, open the throttle plates and a quick shot of starting fluid and it will start right up and run fine and start for days. I could sure use some fresh eyes on this.