Acura 3.5 RL Manual page 420

Fuel Supply System
Injectors (cont'd)
13. Slide new cushion rings onto the injectors.
14. Coat new O-rings with clean engine oil, and put them on the injectors.
15. Insert the injectors into the fuel rail first.
16. Coat new seal rings with clean engine oil and press them into the intake manifold.
17. To prevent damage to the O-ring, install the injectors in the fuel rail first, then install them in the intake manifold.
18. Install and tighten the retainer nuts.
19. Connect the 3P connector to the MAP sensor.
20. Connect the fuel hose to the fuel rail.
21. Connect the vacuum pipe.
22. Connect the vacuum hose and fuel return hose to the fuel pressure regulator.
23. Install the connectors on the injectors.
24. Connect the PCV valve.
25. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for approximately 2 seconds,
the fuel pressure in the fuel line rises. Repeat this two or three times, then check whether there is any fuel leakage.
26. Install the engine cover.
27. Install the strut bar.
FUEL
RAILS