It caused my GMC Sierra to hesitate on startup. I had to sit there and keep cranking it until it started.
Symptoms of a Bad Fuel Pressure Regulator Check related link below
Fuel delivery problems such as a dirty fuel filter, a fuel pump going bad, a faulty fuel pressure regulator.
A bad fuel pressure regulator will cause the car to stall or not run .
You will have and possibly no start. Remove the regulator vaccum, turn the ignition on and it shouldn't spray gasoline, if it does the regulator is bad.
the fuel pressure regulator on the fuel rail might be bad
it's probably not, check your distributor, i had similar problems, changed regulator, fuel pump, car still would stall or hard start. it turned out to be my distributor. i will repeat, this is a problem with the villager, they go bad quick.
its not in the manifold it should be on your fuel rail
Fuel ressure regulator may be bad.
Do a fuel pressure test
you have to use a vacuum pump and aply pressure to it and if fuel goes into the regulator then its working.
Disconnect the vacumm line at the throttle body. If fuel is spurting from the vacumm line then the reg is bad.
Bad fuel filter Weak Fuel pump Bad fuel pressure regulator Plugged Catalytic Converter