Porsche 944 - Manual (Page 114)

20
Fuel Supply 944
CHECKING DELIVERY RATE OF FUEL PUMP
Precondition:
Fuel filter and power supply OK.
1. Unbolt fuel return hose from pressure
regulator. Connect a length of
commercially available fuel hose and
place one end in a graduated cylinder
(capacity apprax. 1500 cc).
2. Disconnect DME relay from central
electrics and, using a length of wire,
jumper terminals 30 and 87 b.
Allow fuel to flow into graduated cylinder for
30 seconds. Minimum delivery rate is 850
cc/30s, if necessary replace fuel pump.
20 - 102 Checking Delivery Rate of Fuel Pump Printed in Germany