| Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it
The '93 & '94 Northstars had the fuel rail inside the manifold. As a result, it is subjected to manifold vacuum, thus no need for a vacuum line. Simply turn the ignition on to pressrize the fuel rail and look for fuel leaking from the FPR nipple. DO NOT CRANK THE ENGINE. If it starts in that configuration, it will run away unthrottled. If the FPR is leaking replace it. |