Chevrolet Equinox Service Manual: Crankcase Ventilation System Description Emissions PCV
A crankcase ventilation system is used to consume crankcasevapors created during the combustion process instead of ventingthem to the atmosphere.
Fresh air is supplied through a filter to the crankcase, thecrankcase mixes the fresh air with the blow-by gases and thenpassed through a positive crankcase ventilation-(PCV)orificed tube into the intake manifold.
The PCV orificed tube restricts the flow rate of the blow-bygases using an orifice-(1) located at the end of thetube. If abnormal operating conditions arise, the system isdesigned to allow excessive amounts of blow-by gases to back flowthrough the crankcase vent tube into the throttle body in order tobe consumed by normal combustion.
Engine
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Adhesives, Fluids, Lubricants, and Sealers
Adhesives, Fluids, Lubricants, and SealersApplicationType of MaterialGM Part NumberUnited StatesCanada#-6 Intake Rear Camshaft CapSealant1237852188901148Balance Shaft Bearings5W-301929300019286321Cam ...
Other materials:
Measuring Frequency
Special Tools EL–39200 Digital Multimeter (DMM)For equivalent regional tools, refer toSpecial Tools.Caution:Refer toTest Probe Caution.The following procedure determines the frequency of a signal.Note:Connecting the Digital Multimeter (DMM) to the circuit before pressing the Hz buttonwill allow th ...
