ACURA NSX 1991 Service Repair Manual

ACURA NSX 1991 Service Repair Manual NSX 1991 ACURA ACURA https://www.carmanualsonline.info/img/32/56988/w960_56988-0.png ACURA NSX 1991 Service Repair Manual
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Page 1501 of 1640

ACURA NSX 1991  Service Repair Manual 
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,

Page 1502 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Supply System

Fuel Injectors (cont'd)

Replacement
Do not smoke during the work. Keep open flames away from your work area.
1. Relieve fuel pressure (page 11-87).
 2. Remove the intake mani

Page 1503 of 1640

ACURA NSX 1991  Service Repair Manual 
13. Install the injectors and fuel pipe assembly in the manifold.

CAUTION: To prevent damage to the O-ring, install the injectors in the fuel pipe first, then install them in the intake

manifold.

Page 1504 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Supply System

Injector Resistor

Description

The resistor lowers the current supplied to the injectors

to prevent damage to the injector coils. This allows a

faster response time of the inje

Page 1505 of 1640

ACURA NSX 1991  Service Repair Manual 
Pressure Regulator
Description

The fuel pressure regulator maintains a constant fuel
 pressure to the injectors. When the difference between
the fuel pressure and manifold pressure exceeds 3.5
 kg/c

Page 1506 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Supply System

Pressure Regulator (cont'd)

3. Check that the fuel pressure rises when the vacuum hose from the regulator is disconnected again.
If the fuel pressure did not rise, check to s

Page 1507 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Filter
Replacement Do not smoke while working on fuel
system. Keep open flame away from work area.

The filter should be replaced: every 4 years or 60,000
 miles (96,000 km), whichever comes fir

Page 1508 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Supply System

Fuel Pump

Description

Because of its compact impeller design, the fuel pump is installed inside the fuel tank, thereby saving space and simplifying the

fuel line system.

FUEL

Page 1509 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Supply System
Fuel Pump (cont'd)
Testing Do not smoke during the test. Keep open
flame away from your work area.

1.    With the ignition switch OFF, disconnect the main
 relay connector.
2.

Page 1510 of 1640

ACURA NSX 1991  Service Repair Manual 
Main Relay

Description

The main relay actually contains two individual relays. This relay is installed behind the passengers seat back
 panel.

One relay is energized whenever the ignition is on wh
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