I have a 97 Firebird 3.8. Did not run for 3 years. Replaced battery, starter, all fluids, fuel pump, spark plugs and wires. The motor is getting spark from all 6 plugs, fuel to the injectors and I can hear the injectors working. The car will start for one second off start fluid, then die. I also hear a hissing noise after shutoff from the drivers side of the engine bay, like its losing compression. Any advice is appreciated, thank you.