I found an'81 280zx that had bee sitting for 20 years with only 16,000 miles.had fuel tank refurbished,new fuel pump and filter,new fuel injecters wires and plugs,distributer and coil.Finally had it running pretty good.Now when i drive for about 20 min or so(i guess when car gets hot,but not overheating)it starts feeling like its not getting fuel.sputters and stalls out.Sometimes it will start back up over time.Any suggestions would be appreciated or a good Z mechanic in Philly area

 

Welcome to ZDriver!

When the problem occurs:

Have you checked the fuel pressure?
Have you checked for spark?
Can you hear the fuel pump?