Oil in intake manifold - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sl87 · 08-08-2011, 08:09 PM

I have ISIS intake manifold. Question:
Does this port behind my intake manifold:

hook up to this port on my valve cover?:

Could this be the reason there is oil in my intake manifold? Doesn't seem like there is a lot. The only reason i say that, is because i unscrewed one of the vacuum plugs underneath the manifold and the bolt had a layer of oil. Thanks

08-08-2011, 08:09 PM	#1
sl87 Leaky Injector Join Date: Sep 2005 Location: san rizzo Posts: 50 Trader Rating: (1) Feedback Score: 1 reviews	Oil in intake manifold I have ISIS intake manifold. Question: Does this port behind my intake manifold: hook up to this port on my valve cover?: Could this be the reason there is oil in my intake manifold? Doesn't seem like there is a lot. The only reason i say that, is because i unscrewed one of the vacuum plugs underneath the manifold and the bolt had a layer of oil. Thanks

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