The fuel rail pressure for a 1994 Chevrolet Lumina varies depending on the engine. You'll need to know the engine size (e.g., 2.2L, 3.1L, 3.4L, or 3.8L V6) to get the correct specification. A repair manual specific to your Lumina's engine is the best source for this information.
Unfortunately, I cannot provide the exact fuel pressure without knowing the specific engine. Searching online for "[Your Lumina's Engine Size] fuel rail pressure specification" along with "1994 Chevrolet Lumina" should yield better results.
