bogey07

hi my car doesnt want to run right its a 94 z28 and im just about out of ideas it seems too idle fine but when i rev it up or put it in gear it falls on its face....just replaced opti,fuel filter,plugs and wires and new fuel pump. ignition moduel and i checked the fuel pressure after i put the new pump in and it reads with the key on 40psi and 38-40psi at idle and when i reved it up it sparatically changes goes up to 50psi and then starts to bog out and hitting even 20psi.... so new pump gone bad or possibly regulator? thanks

the_merv

iTrader: (88)

I'm leaning toward the Pump there..could be the Regulator, but when that goes out it usually has a problem starting..

RamAir95TA

iTrader: (2)

Check the regulator by pulling off the vacuum line off of the regulator. If there's gas or a gas smell it's leaky.