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\n \nbmw e46 n42 ccv replacement
Nov 20, 2021 路 The breather valve is located below the intake manifold, behind the throttle housing mount surface. When replacing your crankcase breather valve, I suggest replacing all the vent hoses and the oil drain hose to the dipstick tube. They become brittle over time from exposure to engine oil and heat.
\n \n\n bmw e46 n42 ccv replacement

Aug 15, 2013 路 This post is on behalf of a friend, last weekend we set out to swap over his CCV valve and surrounding hoses. However we hit a sticking point, there are apparently 2 bolts holding the manifold cover on which need to be unscrewed to gain access.

Apr 20, 2013 路 I found a technical bulletin (Not BMW) suggesting that proper crankcase vacuum is a method to determine if the CCV is working. The bulletin states that the vacuum should read from 3 to 6 inches of water at idle. I borrowed a calibrated vacuum gauge from my job and measured the vacuum at the oil filler cap on top of the valve cover.
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bmw e46 n42 ccv replacement