GravyDavey
NAXJA Member
- Location
- San Diego, CA
1988 4.0 new rebuilt motor AT
Under light throttle, I can hear a hiss coming from the area around the fuel pressure regulator. I pulled the vacuum line to the FPR and listened and its there without vacuum.
Is this normal? I wonder if I need a new FPR.
Under light throttle, I can hear a hiss coming from the area around the fuel pressure regulator. I pulled the vacuum line to the FPR and listened and its there without vacuum.
Is this normal? I wonder if I need a new FPR.