Porsche 928 Workshop Manual page 440

928 cls Fuel System
25
Bleeding
1. Pull off electric plugs from control pressure
regulator and auxiliary air regulator, so that
parts will not run hot during the following tests.
2. Bridge electric safety circuit.
a) Remove cover in footwell on front passenga's
side.
\
r-- '. i. 4
e (., :
J",
: .: :,$
..;j:L, 3"c: ';,:,
6
/ ,
t
b) Pull off fuel pu"'p relay.
a
c) Bridge terminals 30 and 87 with a piece of
wire. Fuel pump or pumps must now run.
3. Position selector lever at 2. Let pressure gauge
hang down (stretched hose). Move selector
lever to position 3 about 5 times at intervals
of 10 seconds.
Printed in Germany - IV, 1930
Connecting and Bleeding
Pressure Gauge
25 -9