So my early production 260z sputtered out and stalled on the way to school about a week ago. After searching the forums and looking in the FSM I was almost positive it was the Mechanical fuel pump that had malfunctioned. So after replacing it today, with an Airtex mechanical fuel pump, the z started up, drove, parked, turned off, and started again and drove. Everything a car should do. Yet after about 10 minutes of driving back from school, I was losing power, and it seemed like the same problem as last time. But the pumps only a few hours old, so I thought perhaps it vapor locked.
....It didn't. I'm not getting fuel to engine again. Even after an hour or two of sitting the car won't start. So I think vapor locking can be ruled out.
Is it possible that the mechanical pump is faulty? (again)
Any input would be greatly appreciated.
-Matthew K.