Starting Issues

[gnomee]

Hello,

Got a '96 T/A and it is not starting right. Somtimes it starts fine but overnight it has decided to start funny. It just cranks. If I hold it and let it crank for about 20 seconds it will start to start and hicop. If I give it gas initially or at any point it starts right up and runs fine. No missing no backfiring. So I am ruling out the opti spark for now. Anyone have any other idea? Please tell me it is just a simple A/F sensor or something.

Thanks.

[5.0THIS]

Check your fuel pressure at startup... could be the pump is on it's way out.

[Blown25thT/A]

I've been having the same trouble. I've already checked my fuel pressure, do you have any other suggestions.

[96camaroSS]

I just fixed a problem like this on my wife's Impala. Stumbled across the cause purely by accident while checking fuel pressure. Turned out that the f/p regulator diaphram had a small leak and was slowly pulling fuel back through the vacuum line. At first I didn't think it could possibly be enough to cause a hard start, but it was.