Ya know ,a cracked plastic fuel line that goes from the pump area to the
fire wall may be cracked.Mine once was. It exploded one morning.If cracked,
your fuel pressure may be being blead off, and out the crack. Cant
pressureize the lines to get fuel through the injectors.The van will buck.
Sometimes a fuel problem seems like a electrical problem. If this happens
at idle too, try using starting fluid in the throttle housing .Dont know if
van is ideling rough  for you. If it then runs fine where it ran rough at
idle, you got a fuel problem.With the gas smell, you have a injection leak
most likely.I replaced the plastic line with rubber fuel injection
hose.Gotta be fuel injection hose to take the pressures.Be careful, sounds
like these 2 problems may be related. Dont want you to catch fire.Let us
know when you fix it , or if you need more help.Roger