* Carburetor: Typically, a carburetor-equipped 318 will have a fuel pressure in the range of 5-7 PSI. This can vary slightly depending on the specific carburetor and its settings.
* Fuel Injection: Fuel-injected 318s will have a significantly higher fuel pressure, usually in the range of 30-45 PSI, but again, this varies depending on the specific year and system. You'll need to consult a repair manual specific to your engine's year and model for the exact specification.
To find the correct fuel pressure for *your* Plymouth 318, you must consult a repair manual specific to your vehicle's year and model. The owner's manual may also provide this information, but a repair manual is more likely to be detailed. You can usually find these online or at auto parts stores.
