However, a generally accepted range is between 12 and 14 PSI (pounds per square inch) at idle with the engine running. This is a *rough estimate*. The pressure should be higher (potentially up to 30 PSI depending on the specifics of your system) during cranking and under load, but you'll need your vehicle's manual for the precise specifications.
Crucially, always consult your owner's manual or a reputable repair manual for your specific vehicle's fuel pressure specifications. Using the wrong information could damage your fuel system or engine. Incorrect fuel pressure can cause a range of problems, from poor fuel economy to engine misfires, or even failure to start.
