Updates - my friend had the injectors serviced and the technician said "I doubt these are your problem." Injectors were reinstalled and still no start. However, the car is making a new sound: "a clicking sort of gurgle from the motor end when raising the pressure and again when the key is turned off." My hunch is wherever the gurgling sound is coming from is the leak or compromise in the fuel system but I thought I would post up here for any ideas.
