Porsche 1972 911 Workshop Manual page 165

E l e c t r i c F u e l P u m p
A roller-type fuel pump is utilized.
F u e l P r e s s u r e A c c u m u l . a t o r
The fuel pressure accumulator is located in t h e
primary circuit directly after the fuel pump. Its
function is to delay the initial pressure surge
when the pump starts. This delay is necessary to
prevent the control plunger from being forced
up before sufficient control pressure has been
allowed to build up.
It also serves as a reservoir to keep the system
under sufficient pressure for a short period of
t i m e when the engine is turned off.
F u e l F i l t e r
An in-1ine.filter with a paper cartridge is
utilized.
D e s c r i p t i o n