Quote Originally Posted by BillBoost37 View Post
You had asked about cleaning the manifold and I thought you might be cleaning the upper intake manifold. If that's the case, I'd suggest plugging the ports suggested in that thread, because the EGR runs between two coolant ports in the upper manifold and over time the heat will crack the manifold and allow the coolant to dump into your engine.

That link.. if you haven't already read it, should be a must read for anyone with an L36. It shows you how and why you could have a failure.
Im a noob to this mod or idea so any information and steps and help would be thankful