"noone" <noone (AT) home (DOT) com> wrote

I'm assuming this is the same as a '98 5.7. ie Vortech/Multiport with fuel
pressure regulator inside the intake minifold.

Drive it until temperature comes up to normal. Shut engine off. Remove
ducting at intake to access throttle body. If you can see or smell fuel
inside the intake manifold (through the throttle body) your fuel pressure
regulator is leaking.

Cold starts don't mind a little extra fuel. Warm starts need a little more
air if it is getting too much fuel. Once running, the computer control will
compensate and decrease the fuel delivered by the injectors.

On the newer engines, the FPR is on the fuel rail on the drivers side of the
engine. You simply warm the engine up, shut it off, wait a half an hour or
so and pull the vacuum hose and check for the presence of fuel.
H