911 Carrera Cabriolet F6-3600cc 3.6L SOHC (1995)
Fuel Pressure: Testing and Inspection
CHECKING FUEL PRESSURE
1. Remove heater fan from left-hand rear engine compartment area.
2. Detach cap from fuel collection pipe test connector and take off cap.
3. Connect pressure gauge of pressure measuring device P 378 or VW 1318 to connecting line 9559 and connect to test connector.
4. Pull DME relay (R53) off the Central Electrical System and use a fuse-protected shop- made jump lead to connect pin 30 to pin 87 b
(identifications 3 and 7 on Central Electrical System). The fuel pump should now operate.
Test specifications:
Engine switched off 3.8 ± 0.2 bar (55 ± 4.4 psi)
Engine idling 3.3 ± 0.2 bar (48 ± 2.9 psi)
CAUTION: The plastic cap at the test connector must always be replaced by a new brass cap (Part No. 993.110.218.01). The seal in the brass cap
cannot be replaced. The brass cap must therefore be used only once.
Tighten new brass cap to 2.5 + 0.5 Nm (1.8 + 0.4 ft lb).