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I have only just got a T4 and opened bonnet today to fill the washer fluid and saw what appears to be an oil leak from a one needed pipe? What is it and do I need to worry? I’m very new to this and appreciate any help!!
176575
 

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The small pipe was for the egr valve but has been blanked off, hopefully the oil is coming from the large pipe on the pcv valve ,replace the tie wrap with a jubilee clip for a tighter seal.
If the oils from the small pipe there's a lot of oil coming from your turbo,take the turbo hose off and see if it's only inside
 

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It does look rather saturated. I'm no expert here but If it were me I'd remove the large diameter pipe that goes to that housing and see if it's full of oil in there. I think you'll often find a misting of oil in there but it shouldn't be pouring out. I'm thinking Turbo seals letting in oil.
 
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