ACF in the PCV

**topsparky** · 26 April 2008, 23:57

i think it means active carbon filter

**UrS4boy** · 27 April 2008, 00:02

Originally posted by Animal Mother

What is the ACF and what does it do?

ACF = Activated Carbon Filter.

**newsh** · 27 April 2008, 05:22

Its a little electric solenoid valve that clicks open occasionally when the throttle is closed so that inlet manifold vacuum draws vapour from the fuel tank through the carbon filter. Its the reason your filler cap goes Skuuusshh when you remove it.

**quattro20v** · 27 April 2008, 07:09

Ot. Or ACF= Audi club Finland.

Sorry.

**Animal Mother** · 27 April 2008, 09:26

Originally posted by newsh

Skuuusshh

That is one of the best bits of onomateopoeia I've ever heard.

Thanks btw.

**NZS2** · 27 April 2008, 20:57

Skuuuusshh

Lordy - I don't get that sound when I remove my filler cap...wonder why that is and should I be worried?

ACF in the PCV

ACF in the PCV

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