Honda Acura NSX 1991 Service Manual page 263

System Description
The fuel supply system consists of a fuel tank, in-tank
high pressure fuel pump, fuel pump relay, fuel pump
resistor, main relay, fuel filter, pressure regulator, injec-
tors and injector resistor.
This system delivers pressure regulated fuel to the in-
jectors and cuts the fuel delivery when the engine is not
running.
Relieving
Keep open flames or sparks away from the work
area.
O f f .
NOTE: Before disconnecting fuel pipes or hoses,
release pressure from the system by loosening the 6
mm service bolt at top of the fuel filter.
1 . Disconnect the battery negative cable from the battery
negative terminal.
2. Remove fuel filler cap.
3. Use a box end wrench on the 6 mm service bolt al
the fuel filter, while holding the special banjo bolt
with another wrench.
4. Place a rag or shop towel over the 6 mm service bolt.
Slowly loosen the 6 mm service bolt one complete
5.
turn.
SHOP '
TOWEL
NOTE:
service bolt hole.
and the special banjo bolt, whenever the service
bolt is loosened to relieve fuel pressure.
removed to disassemble parts.
.
SERVICE BOLT
12 Nom (1.2 kg-m, 9 lb-ft)
II-87