* Injector design: Ford used different injectors across model years and even within a model year depending on engine calibration. There's no guarantee all 1997 4.6L Crown Vics used the same injectors.
* Engine conditions: The flow rate changes based on throttle position, engine speed, and load. It's not a constant value.
* Fuel pressure: Higher fuel pressure will result in a higher flow rate.
To find the flow rate, you'd need to:
1. Identify the specific injector part number: This is the most reliable way. You can find this number stamped on the injector itself or by cross-referencing your vehicle's VIN with a parts database.
2. Consult a parts catalog or injector manufacturer's specifications: Once you have the part number, you can look up its flow rate (usually expressed in pounds per hour (lb/hr) or cubic centimeters per minute (cc/min) at a specific pressure). Websites like RockAuto or a Ford parts catalog might have this information.
3. Have them flow tested: The most accurate method is to have your injectors professionally flow tested. This measures the actual flow rate of your injectors under controlled conditions.
Without the specific injector part number, it's impossible to give you a definitive answer. Trying to guess based on general engine specs would be inaccurate and unhelpful.
