Robb Knight

Ok Let me start by telling you what type of car and the problem. Its a 1989 Firebird Formula 5.7 v8 350. Car has been Running smooth and not given me any trouble. I'll tell you what I have done to it incase that helps. List of new parts include; Radiator, alternator, Full tune up (Spark plugs, wires, distributor cap, oil change), New brakes all around, New Brake lines, Fuel pump, fuel injectors, rear shocks. Thats all I can think of at the moment. I only list this to help the person help me by knowing a bit about the car. Well to the problem. In the past two days car has given me trouble starting. Im pretty sure its a gas or gas delivery problem because when I pump the gas pedal and try to turn on at the same time that works and car stars up fine. I only have this problem after not driving it for a few hours and going to turn it on. If I turn it off and try to start it back up or just wait an hour or two its fine and will start up normal. So its when the car sits for awhile. Anyone have a clue as to what the problem might be. BTW i use 93 gas if that helps at all. Its always worked fine for me and the car feels much better with it.

ZZ28ZZ

Sounds like leaky injector/s. Do a fuel press bleed-down check.