I am reading from my gas turbine engine class notes that apparently, one indication of compressor stall (besides the banging sounds, torque gauge low, N1 low, ITT gauge up, etc) is the fuel levels starting to drop.
since the compressor stall results in a reduction of airflow to the turbines, more fuel will be required to maintain the current thrust, increasing the fuel consumption increases burner and turbine temp
Ok, so (the last paragraph was from the class notes) yes I would agree that due to the lack of enough airflow turbines and burner sections might increase in temperature.
However, why is there more fuel being released to the combustion chamber whenever there is less air? shouldn't the fuel control unit or another system reduce the fuel due to the reduction/lack of air to keep the ratio of air:fuel ratio for a proper mixture?