Thanks. Some engine oil was found on the bottom of the manifold.

來源: 於 2010-12-01 07:46:22 [舊帖] [給我悄悄話] 本文已被閱讀：次

But I　still need to prove that the oil really comes from the valve cover or from the head gaske. I will throughly clean the back of the manifold this weekend by using engine degracer. 

BTW, is it a nightmare to replace an engine head gasket? If it is too difficult to replace, I may live with it. Thanks.