Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Acura 3.5RL 1996-2004 Approved srm RL9604S11174A

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               Main Menu               Table of Contents



Emission Control System
 Positive Crankcase Ventilation (PCV) System
 Description                                                   Inspection

 The Positive Crankcase Ventilation (PCV) system is            1. Remove the engine cover. Check the PCV hoses and
 designed to prevent blow-by gas from escaping to the             connections for leaks and clogging.
 atmosphere. The PCV valve contains a spring-loaded
 plunger. When the engine starts, the plunger in the PCV
 valve is lifted in proportion to intake manifold vacuum and                                                   PCV
 the blow-by gas is drawn directly into the intake manifold.                             PCV HOSE
                                                                                                               VALVE



                                                                     BREATHER
                                                                     PIPE
                                      BREATHER PIPE
   PCV HOSE




                                                               2.   At idle, make sure there is a clicking sound from the
                                           PCV VALVE                PCV valve when the hose between the PCV valve
                                                                    and intake manifold is lightly pinched with your fin-
     BLOW-BY VAPOR                                                  gers or pliers.
     FRESH AIR




                                                               Gently pinch here



                                                               If there is no clicking sound, check the PCV valve grom-
                                                               met for cracks and damage. If the grommet is OK,
                                                               replace the PCV valve and recheck.

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