Well, I finally got the fuel filter changed in my 91 z28 tpi. Changed the spark plugs too. I was really hoping this would solve the problem I had been having, especially after seeing the crappy plugs I pulled out. It took awhile to get the thing fired up again, but finally it went. It reved over 3k just fine and idled nice for about 3 minutes then just shut off. Now there appears to be a pretty good leak toward the front of the passanger side fuel rail. It looks like it might be coming from the front injector...maybe a bad o-ring...? We got the car started again and it idled for about another 5 or 10 minutes and then just shut off....now it won't start again! I hear the fuel pump prime when I turn the key, but is it possible the fuelpump quits during idle? What could the leak be from on the fuel rail? Could the leak be causing the car to shut down? Any help would be nice! I'm running out of time and energy with this thing!

 

Leak sounds like injector O-ring as you said. Does the car bog down when it shuts off? Hook up a pressure gauge to monitor fuel pressure, to see what happens. I would think the fuel leak would have to be a great amount to cause the car to kill itself.

 

Thanks.
No the car doesn't really bog it just revs down and dies. I guess I'll have to just get it towed in somehwere to get it looked over better than what I can do. Hopefully it is just an o ring....the mechanic said he could take care of that in an hour or two.