However, a general range of 40-60 PSI at the fuel rail is a good starting point for troubleshooting. You'll need to consult a repair manual specific to your Astro's engine to get the precise specification. The manual will likely specify the pressure at a particular engine speed and temperature.
To find the correct fuel pressure:
1. Locate your vehicle's repair manual: This is the most reliable source of information.
2. Check your owner's manual: It might list the fuel pressure or at least refer you to the correct service information.
3. Consult online resources: Websites like Chilton or Haynes often provide repair information, but always cross-reference with your vehicle's specifications.
Do not attempt to measure fuel pressure without proper safety precautions and knowledge. Fuel is flammable and under pressure.
