To find the correct fuel pressure specification, you need to consult your vehicle's repair manual. This manual will provide the accurate pressure range for your specific Lumina's engine (e.g., 2.2L, 3.1L, 3.4L, 3.8L).
You can usually find a repair manual online (for purchase) or at your local auto parts store. The information should be in the fuel system section.
Attempting to diagnose fuel pressure problems without the correct specification is risky and could lead to incorrect repairs.