Generally, the fuel pressure will be in the range of 10-15 psi (pounds per square inch) when the engine is *off* and significantly higher, typically 40-60 psi, when the engine is *running*. However, this is a broad estimate and could be different for your specific truck.
To find the precise specifications:
1. Check your owner's manual: This is the best place to start. The fuel pressure specifications should be listed in the maintenance or specifications section.
2. Consult a repair manual: A Haynes or Chilton repair manual for your specific year, make, model, and engine will provide detailed specifications.
3. Look up your engine code: The engine code (often found on a sticker under the hood) can help you find more precise information online.
Don't rely solely on general estimates. Incorrect fuel pressure can cause serious engine problems. Always refer to the official documentation for your vehicle.
