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Thread: Air Intake hose leaking oil

  1. #1
    Regular Member JamesGTB's Avatar
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    Default Air Intake hose leaking oil

    Hi everyone

    I have recently noticed oil runs on the sump tray of my 150 CDTI so with investigation traced it back to the main air inlet hose that leads to the inlet manifold.To be exact it is leaking from the jubilee clip joint where the rubber hose meets the hard plastic joint. After removing the hose there seems to be alot of oil in it which in turn is leaking from the joint - should there be this much in there or is manifold blocked etc?? Car is running fine at the mo apart from this dripping. Any ideas??

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    Regular Member barney490's Avatar
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    It's normal for oil to be in the inlet hose. it comes from the breather system as oil mist and as it passes though the intercooler it condenses back into oil. This is the main cause of egr valves becoming clogged with carbon and why some people look at modifying the breather system. As it is a diesel, the engine normally burns this oil with no ill effects, so if the car is running fine i would just renew the clip or pipe if it's split.

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    Regular Member JamesGTB's Avatar
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    Hi
    Thanks for the reply & confirming.I thought oil would be present but wasn't sure on the amount.
    Cheers

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    Regular Member JamesGTB's Avatar
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    Hi
    Thanks for the reply & confirming.I thought oil would be present but wasn't sure on the amount.
    Cheers

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