Where is the injector fuel rail on a 1995 ninety-eight to hook up fuel pressure gauge?

On a 1995 Oldsmobile Ninety-Eight, the fuel pressure gauge can be connected to the fuel rail, which is located along the top of the engine, typically near the intake manifold. Look for a Schrader valve on the fuel rail, which resembles a tire valve; this is where you can attach the fuel pressure gauge. Make sure to relieve the fuel system pressure before connecting the gauge to avoid any fuel spray.