Now i'm sure most if not all of you are aware of the issue attaining to the N14 engine, which has the issue of excessive carbon build up on the inlet valves ?
The usual method is to fit an oil catch can or use a cleaning additive such as Seafoam, BG K44 etc etc or maybe both, there has been discussions and I have mentioned this too, about the fitment of water/meth injection to help remove and control the excessive carbon build up.
For a while now I have been testing another solution, and this is to completely remove the rear PCV hose, which feeds the crankcase gas oil mist residue directly into the base of the inlet manifold, which in turn is pulled up into the incoming air flow and finds itself being burnt onto the inlet valves.
So the following photo's show what I have done as another alternative to combat this issue.
And all is well and good.
Performance Powered By Thought. Engineered Horsepower.
Last edited by MINIAC; Apr 12th, 2011 at 11:02 PM.
Reason: Fix image links
NOOOOO!!!! I hope I am wrong and I have misunderstood what you have just done but have you completely blanked of the PCV valve?
If you did then why? PCV valve is important. You cannot blank it off. The engine needs to breathe through it to let blow by gasses escape. If you blanked it off then you are going to kill your engine in the next day or two.
How does this work? How does the engine vent the crankcase gases if the outlet is blanked off?
Does the Peugeot blank piece still allow the pressure to be released?
Why do Peugeot produce these blanking pieces?
I had a minor intermittent misfire which the dealer attempted tp sort by replacing the plugs - apparently a bit burnt? Updating the anti-knock software and finally some sort of fuel additive? Also repeatedly advised that I was using 'bad' fuel. At the last visit the senior mechanic told me that he had done some long term comparisons on his own car and only used the main fuel brands - just the normal octane - not the super. Have followed his advice for six month - no misfire! Still worried about the 'coking' due to the direct injection and the breather return issue so interested in this solution?
Thanks for your reply, I am just trying to get my head round what i can do to look after my car, all i keep reading everywhere is that there are numerous problems with this engine.
I found a link about this PCV delete because i noticed that some people had stated that it was related to knock sensor codes which i have had to have taken off once at the dealer.
How long have you been running this mod ?
does it have any other effects ?
I have also had to change the sump gasket on my car and read somewhere that it can aslo be connected to crankcase pressure ?
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.