Acura NSX 1991 Manual page 253

Main Menu
Fuel Supply System
Fuel Injectors
Replacement
Do not smoke during the work. Keep open flames away from your work area.
1. Relieve fuel pressure (see page 11-132).
2. Remove the intake manifold covers.
3. Disconnect the connectors from the fuel injectors and the IAT sensor.
4. Disconnect the vacuum hose and fuel return hose from the fuel pressure regulator.
NOTE: Place a rag or shop towel over the hoses before disconnecting them.
5. Disconnect the fuel hose from the fuel rail.
6. Loosen the retainer nuts on the fuel rail and harness holder.
7. Disconnect the fuel rail.
8. Remove the fuel injectors from the intake manifold.
O-RING
Replace.
CUSHION
RING
Replace.
SEAL RING
9. Slide new cushion rings onto the fuel injectors.
10. Coat new O-rings with clean engine oil, and put them on the fuel injectors.
11. Insert the fuel injectors into the fuel rail first.
12. Coat new seal rings with clean engine oil, and press them into the intake manifold.
Table of Contents
HARNESS,
HOLDER
Replace.
FUEL INJECTOR
INSULATOR
Replace.
INTAKE
22 N-m
MANIFOLD
(2.2 kgf-m,
COVERS
16 Ibf-ft)
FUEL
12 N-m
PRESSURE
(1.2 kgf-m,
8.7 Ibf-ft) REGULATOR
FUEL RAIL