A fuel pumping apparatus for supplying fuel to an engine has a high pressure pump which includes a component movable to determine the maximum amount of fuel which can be supplied to the engine. The component is biased by a spring (38) to a minimum fuel position and to adjust the setting of the component there is provided a three armed lever (44) one arm (39) of which is coupled to the component. The other two arms (47, 48) are coupled to engine operating parameter responsive devices (49A, 60). In the example the device (49A) is a piston (49) which is spring loaded and is responsive to the output pressure of a low pressure fuel pump and the device (60) includes a diaphragm (62) which is subjected to the air inlet manifold pressure.