Citroen C5 (2001 - 2008) - 04 2.2 Hdi auto - drain hole in the intercooler

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Thu 8 May 2008 21:23
04 2.2 Hdi auto - drain hole in the intercooler - EdHunter
This might be a dumb question.

I keep reading about a drain hole in the intercooler. Does this mean that the intercooler leaks its pressurised air to the outside world?

{subject header made less vague}

Edited by Dynamic Dave on 08/05/2008 at 22:14

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Thu 8 May 2008 21:54
04 2.2 Hdi auto - Screwloose

If an intercooler has a drain plug; then it's to drain any oil that might have accumulated inside it.
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Thu 8 May 2008 22:54
04 2.2 Hdi auto Drain hole in intercooler - EdHunter
Sorry about the vague non-subject ;-)

Thanks ScrewLoose, "Drain plug" makes sense. "Drain hole" did not.

Here is one of the examples that caused my confusion:
volvospeed.com/vs_forum/index.php?showtopic=78514&...6
The above says:
"There should be an oil drain hole in the bottom of the intercooler. Make sure it is clear and see what happens."

I guess then two things:

1) that there is not drain plug on the Citroen's intercooler (at least I can't see one)

2) If the intercooler is leaking oil into the engine bay then the iintercooler is defective?
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Thu 8 May 2008 23:12
04 2.2 Hdi auto Drain hole in intercooler - Screwloose

Yes; that thread is a bit ambiguous. I recall draining the intercooler on a Volvo some years ago after a blocked engine breather filled it [and the exhaust] with oil. [I still obliterated 5 miles of the A24 blowing it all out....]

IC drain plugs are rare; even a tiny air leak spits oil - not usually a problem, there's a lot of air to lose.
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