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Crankcase Ventilation Valve Replacement
 
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Pelican Technical Article:

Crankcase Ventilation Valve Replacement

Steve Vernon

Time:

1 hour1 hr

Tab:

$15 to $75

Talent:

**

Tools:

T25 Torx

Applicable Models:

VW GTI (2006-09)

Parts Required:

New gasket, PCV Valve

Hot Tip:

Use caution working with old hoses

Performance Gain:

Car runs like normal again

Complementary Modification:

Replace vacuum hoses

The early production versions of the Crankcase ventilation (PCV) valve where prone to failure resulting in loss of turbo boost and oil seepage. The gaskets on the valve also have a tendency to leak over time as they dry out and get brittle. Not to worry though as changing the PCV valve or gasket can be done in well under an hour with a minimum of tools.

If you do not have an after market air induction system you will need to remove the engine cover.
Figure 1

If you do not have an after market air induction system you will need to remove the engine cover. Please see our article on engine cover removal for additional assistance.

You will need to remove the vacuum line from the intake manifold to the crankcase ventilation valve (red arrows).
Figure 2

You will need to remove the vacuum line from the intake manifold to the crankcase ventilation valve (red arrows). You do not need to disconnect the smaller vacuum line (yellow arrow).

Remove the crankcase vacuum line behind the manifold line (red arrow).
Figure 3

Remove the crankcase vacuum line behind the manifold line (red arrow).

Next, remove the four T25 Torx screws holding the valve assembly to the valve cover (red arrows).
Figure 4

Next, remove the four T25 Torx screws holding the valve assembly to the valve cover (red arrows).

Gently pull the crankcase ventilation valve assembly away from the valve cover (red arrow).
Figure 5

Gently pull the crankcase ventilation valve assembly away from the valve cover (red arrow).

While the gasket that seals the crankcase ventilation valve is not as critical as a fuel seal it is always a good idea to replace it (red arrow).
Figure 6

While the gasket that seals the crankcase ventilation valve is not as critical as a fuel seal it is always a good idea to replace it (red arrow). These gaskets get old and dry up and leak over time.

Installation of the new crankcase ventilation valve assembly is the reverse of removal (red arrow).
Figure 7

Installation of the new crankcase ventilation valve assembly is the reverse of removal (red arrow).

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Page last updated: Fri 8/18/2017 02:43:07 AM