fuel cap release ACURA NSX 1991 Service Repair Manual

System Description
The fuel supply system consists of a fuel tank, in-tank high pressure fuel pump, fuel pump relay, fuel pump
resistor, PGM-FI main relay, fuel filter, fuel pressureregulator, fuel injectors and fuel injector resistor.
This system delivers pressure-regulated fuel to the fuel injectors and cuts the fuel delivery when the engine is
not running. Fuel Pressure

Relieving
Do not smoke while working on the fuel system.
Keep open flames or sparks away from your work

area.
Be sure to relieve fuel pressure while the engine is

off.

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
fill
cap.
3. Use a box end wrench on the 6 mm service bolt at the fuel filter, while holding the special banjo boltwith another wrench.
4. Place a rag or shop towel over the 6 mm service bolt.
5. Slowly loosen the 6 mm service bolt one complete turn.

SERVICE BOLT
12 N .
m (1.2 kg-m, 9lb-ft)

SHOP

TOWEL
FUEL FILTER

NOTE:
A fuel pressure gauge can be attached at the 6 mm

service bolt hole.

Always replace the washer between the service bolt
and the special banjo bolt, whenever the service

bolt is loosened to relieve fuel pressure.
Replace all washers whenever the bolts are
removed to disassemble parts.

(cont'd)ProCarManuals.com

System Description


Fuel Pressure
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

Do not smoke while working on the fuel system.
Keep open flames or sparks away from the work

area.
Be sure to relieve fuel pressure while the engine is
off.
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 at 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.
5. Slowly loosen the 6 mm service bolt one complete
turn.
SERVICE BOLT
12N.m(1.2kg-m. 9 Ib-ft)

SHOP

TOWEL
FUEL FILTER

NOTE:

A fuel pressure gauge can be attached at the 6 mm
service bolt hole.
Always replace the washer between the service bolt
and the special banjo bolt, whenever the service

bolt is loosened to relieve fuel pressure.

Replace all washers whenever the bolts are

removed to disassemble parts.

(cont'd)
ProCarManuals.com