<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/Peugeot.png" border="0" alt="" height="40" />
Peugeot/Citroen/Mini 1.6 Turbo (THP) - PCV delete modification
12251 Views
2011-04-01
THIS FIXED MY OIL CONSUMPTION ISSUE.
BEFORE FINDING THIS FIX I HAD DONE
OIL FLUSH
STRIP DOWN CYLINDER HEAD AND DECOAT HEAD AND REPLACE VALVE STEM SEALS.
REPLACED PISTON RINGS AND DEGLAZED BORE.
FITTED THE 2 BLANKING CAPS NOW CAR SPOT ON. HOPE THIS HELPS
This technical modification is applicable on the following cars:
- Peugeot 207 GT / Rallye / XS / THP150 1.6 Turbo 150/156hp
- Peugeot 207 RC / GTI 175hp
- Peugeot 308 150/156hp
- Peugeot 308GT 175hp
- Peugeot 3008 1.6T 150/156hp
- Peugeot RCZ 1.6T 156hp
- Citroen DS3 1.6 Turbo 156hp
- Citroen C4 VTS 1.6 Turbo 150/156hp
- Citroen C5 1.5 Turbo 150/156hp
- Mini Cooper S R56 1.6 Turbo 175hp
- Mini Cooper S R56 1.6 Turbo JCW
Stopping oil from getting into the intake manifold directly from the crankcase
The latest and greatest modification for getting rid of oil in our intake manifold, which is causing so many problems in the cylinder head and intake valves, comes from Peugeot themselves. The new RCZ and 308GTI with the THP200 engine have a small difference in their intake manifold compared to the older models. While the manifold body is the same, there is a very small cap that closes the rear PCV hose in the THP200 engine, which does not exist on the THP150 and 175hp engines. PCV is the Positive Crankcase Ventilation system, which forces blowby gases back (and a lot of oil coming with it) in the intake system. This cap is very cheap and available from Peugeot (part code 0361S4 ), using it saves the trouble of having to clean your intake from oil and combustion residues. The difference between the intake manifolds can be seen in the following pictures from Peugeot Servicebox.
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/intakemanifold_thp150-175.jpg" alt="THP 200 - Intake manifold (image taken from Peugeot Service Box)" />
Part number 8 is the cap that closes the PCV return hose from the engine to the intake manifold.
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/intakemanifold_thp200.jpg" alt="THP 150/175 - Intake manifold (image taken from Peugeot Service Box)" />
Installing the cap in THP150 / 175 engines
First remove the rear PCV return hose. Press the clip to release it from the engine cover.
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/5.jpg" alt="Hose connecting the rear PCV outlet to the intake manifold" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/enginebay_pcv_return1.jpg" alt="" />
Intake manifold side
Press the clip on the intake manifold to release the hose again.
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/enginebay_pcv_return1-intakemanifold.jpg" alt="Rear PCV hose - connected to the intake manifold" />
The cap that solves our problems
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/tapa_1.jpg" alt="PCV delete mod1 - Peugeot part" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/tapa_2.jpg" alt="PCV delete mod1- Peugeot part" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/9.jpg" alt="Removing the rear PCV hose" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/10.jpg" alt="Removing the rear PCV hose" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/6.jpg" alt="Removing the rear PCV hose, intake manifold side" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/11.jpg" alt="Removing the rear PCV hose, intake manifold side" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/13.jpg" alt="Removing the PCV return hose from the engine bay" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/14.jpg" alt="Removing the PCV hose from the engine bay" />
Remove the hose from the engine bay.
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/pcv_return_hose.jpg" alt="Rear PCV return hose (removed)" />
Install the caps
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/1.jpg" alt="Closing the rear PCV outlet" />
<*** src="file:///C:/Users/Gary/Desktop/oil%20consumption.php_files/3.jpg" alt="Closing the PCV return inlet, intake manifold" />
Both caps installed, no more oil in the intake manifold.
Special thanks to giannis27 for his research, time and photos!
More information or answers in frequent questions you can find in the Forum of Technical Support of Etuners
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