Air/Fuel Ratio vs. Fuel Pressure

I am curious, if you have an air/fuel ratio "gauge" and you lose fuel pressure, will the gauge show a "lean" condition due to the drop in fuel pressure??

Depends.If u r talking about a stock Mazda 2200/2600,if u lose fuel pressure,o2 and other sensors will read lack of fuel and cut back on 02 accordingly as much as they can.Ratio would try to maintain itself until truck quit running due to fuel starvation.It probably would read lean at some point.BJ