Porsche 924 Workshop Manual page 151

924
Fue l Mixt u re
25
CHECKING FUEL DELIVERY RATE FOR CONTROL PRESSURE CIRCUIT
Testing Requirements: Fuel pump in
perfect running
condition :
Checking
1. Connect and bleed pressure meter P 378.
2. Turn valve to position 3.
3. Disconnect left hose from special tool P 378 at
feed line to control pressure regulator and hold in a
measuring glass (capacity at least 500 cc).
Printed in Germany ·
X, 1982
4. Turn on ignition. T urn valve to position 2 and let
fuel pumps(s) run exactly 1 minute by pulling off
two-pin plug on mixture control unit.
The fuel pump(s) in cars from 1979 models can be
run by supplying battery voltage to multiple-pin
plug terminal 7 (red/white) with a piece of wire.
The ignition need not be turned on.
Checking Fuel Delivery Rate
for Control Pressure Circuit
25 · 8 a