Fuel pump Volvo 740/760 (-1987) Injection

A hard-starting engine, pressure drop after shutoff or a buzzing noise from the rear can point to a tired fuel pump or a leaking pressure accumulator, and both should be checked before condemning sensors and injection nozzles. On injected 740/760 up to and including 1987, the pump sits in a system that needs to maintain the correct supply pressure to start both warm and cold.