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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 11-24-2012, 09:44 AM
ventsyv ventsyv is offline
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Location: Baltimore, MD, USA
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Mein Auto: 03 BMW 330ci
Diagnosing a VCG leak

I was having a pretty massive oil leak which I traced to the area under the intake. I had the PCV replaced along with all the hoses from the kit, as well as the oil filter gasket.

The rate of oil loss was reduced, but not completely eliminated. After inspecting the engine bay for traces of fresh oil, I found some on the metal trim on the passenger side that shows below the plastic covers.

I suspect I have a leaking VCG. The car has 130 000 miles and is still on the original VCG, so it's not a surprise that it leaked, but is there any way to confirm that?

I replaced the spark plugs about 50,000 or 60,000 miles ago. If the VCG leaked, do I need to replace the sparkplugs? If I remember correctly, there are little gaskets for the plugs, right? Chances are they went bad too right?

Last edited by ventsyv; 11-24-2012 at 09:58 AM.
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