I realize that the PCV is an integral part of an engine’s emissions system but on my 2011 2.2L I can’t find it. Looking in parts books all I can find is a hose that’s labeled “PCV hose”.

Is the actual PCV valve part of the cam cover? Am I missing something?

Thanks for your help.

Fierojo

 

Yes it is,
There is a hose connecting the cam cover to the air inlet just before the throttle body.

 

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Home >> Chevy Truck >> 2011 >> HHR L4-2.4L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Positive Crankcase Ventilation >> Service and Repair

Positive Crankcase Ventilation: Service and Repair

Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure




1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (Service and Repair).
2. Reposition the positive crankcase ventilation (PCV) hose clamp at the camshaft cover.
3. Remove the PCV hose from the camshaft cover.

Installation Procedure




1. Install the PCV hose to the camshaft cover.
2. Position the PCV hose clamp at the camshaft cover.
3. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (Service and Repair).


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Is there any maintenance that can be performed for the PCV valve inside the same cover? Does the cam cover have to be removed for that maintenance?

thanks

Fierojo

 

I don't think there's is actually a valve. The engine vacuum provides Positive Crankcase Ventilation through the hose.

The 2.0 turbocharged has a valve. It is needed because, during boost, there is no vacuum, but positive pressure in the intake manifold.

 

Not that I know of other than to verify that it is not plugged inside than cam cover.
If you remove the cam cover you can remove a set of screws and a cover plate and see that the PVC is just baffles to help keep the oil in the engine.
That's in early 2006 engines, the ones with an oil/water heat exchanger.

 

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Home >> Chevy Truck >> 2011 >> HHR L4-2.4L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Positive Crankcase Ventilation >> Description and Operation

Positive Crankcase Ventilation: Description and Operation

Crankcase Ventilation System Description

General Description

A crankcase ventilation system is used to consume crankcase vapors in the combustion process instead of venting them to atmosphere. Fresh air from the intake system is supplied to the crankcase, mixed with blow by gases and then passed through a calibrated orifice into the intake manifold.

Operation





The primary control is through the positive crankcase ventilation (PCV) orifice which meters the flow at a rate depending on inlet vacuum. The PCV orifice is an integral part of the camshaft cover. If abnormal operating conditions occur, the system is designed to allow excessive amounts of blow by gases to back flow through the crankcase vent into the intake system to be consumed by normal combustion.

Results of Incorrect Operation

A plugged orifice may cause the following conditions:

* Rough idle
* Stalling or slow idle speed
* Oil leaks
* Sludge in engine

A leaking orifice may cause the following conditions:

* Rough idle
* Stalling
* High idle speed


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