Fuel system pressure release
should be a schrader valve with a cap on it on the fuel rail to relieve the pressure.
You will have to remove the inside engine cover to get to it, or if your not in a hurry let it sit overnight by then the pressures will be low enough that it shouldn't be too much of a problem. Just keep a small drain pan handy to catch what starts to flow. As with most Fords prepare to get some fuel to your arm pit. HA HA
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