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Thread: Intercooler clean out

  1. #1
    Regular Member 111's Avatar
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    Default Intercooler clean out

    has anyone taken their's off and cleaned it out, if so how much crud came out, did it take long & did it make any differance???.

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    Regular Member The Doc's Avatar
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    Shouldn't be anything in it mate. If there is, there are issues.

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    Regular Member ANDY GSI's Avatar
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    the intercooler is for cooling down the air that runs through it and is sealed from any dirt and other crud that may get in, if it does then you may be in a spot of bother!

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    Regular Member 111's Avatar
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    I know what your saying, But every car I've had with a turbo has had loads of crud in the intercooler, Mainly from the EGR valve or crank case pressure recirc etc. I'm not talking grass or flies but thick oil or gunge. always made me wonder what the turbo is like. I'll have to see how easy it is to remove and clean. I'm not taking more than 2 hours. All the others (8) bar 1 have been performance engines rather than the Dti I have now.

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    Regular Member The Doc's Avatar
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    No more than 2 hours I would of thought. What was your previous cars?

    If there is oil in your intercooler, your turbo seals are weeping. And need replacing!

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    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

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    Default

    Not necessarily.

    Before you go dismantling your turbo.... If the turbo seals are leaking, then there would probably be serious amounts of oil. To be honest, turbos don't have 'seals' in the usual context. The normally rely on pressure differentials between turbo core and impeller and turbine enclosures.

    I would fist look at the crank case ventilation system. CCV basically sucks out any blow-by gases (including oil mist...) and feeds into the air inlet system, after air filter and prior to turbo inlet.

    This air is then compressed by the turbo and cooled by the aftercooler. Clearly this would result in the oil mist aerosol condensing on the pipes and aftercooler internal passages. The effect of this would be a SLIGHT oil deposit, which would be fairly thin. Obviously, blow-by would increase as the engine wears and the CCV filtering system may degrade over time. (not sure if Vec has any filtering device)

    This is how classic CCV works, not sure if it totally applies to diesel Vec C (as I don't have one) but is the normal way of doing things.

    My last Vec B DTi had small amounts of oily gunge in the turbo to aftercooler pipes. Nothing to be worried about though.

    HTH

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    Regular Member Green Growler's Avatar
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    Quote Originally Posted by Ste
    My last Vec B DTi had small amounts of oily gunge in the turbo to aftercooler pipes. Nothing to be worried about though.

    HTH
    I'd agree with that, as said, due to the re-circulation system I would not be surprised to see SMALL amounts of oil in there.

    And having had my intercooler replaced last week I can tell you the book time to replace it is 0.9, so about half hour out, and the same back in.

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    [Ex]Admin Duncan's Avatar
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    Quote Originally Posted by Green Growler
    And having had my intercooler replaced last week I can tell you the book time to replace it is 0.9, so about half hour out, and the same back in.
    I wonder where you got that info from then?

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    Regular Member Green Growler's Avatar
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    Quote Originally Posted by Duncan
    I wonder where you got that info from then?
    From someone who doesn't know when he's had enough Vodka.

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    Regular Member 111's Avatar
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    Thanks lads, I'll give it a shot hopfully at the weekend. The other cars were Sierra cosworths inc 2 RS500s , 1 Escort cosworth, Mk2 Escort RS2000 turbo & a courtney Astra turbo. Not all at the same time & before I got married. Hence the Dti now . Only joking I like the Vectra & the Mpg, It's just not 420Bhp with rwd if you know what I'm saying.

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