99lexus Posted April 19, 2007 Share Posted April 19, 2007 Hi, My car is 99 ES300. The ruber tube between PCV valve and Intake Manifold have some oil. I changed the PCV valve last year. -Do you know what cause it? Is it because the guy over fill when he change engine oil? -The car still running OK now. Should I just bring to a mechanic to fix or it is a serious problem in the engine and need to be taked care by dealer? Thank you, Quote Link to comment Share on other sites More sharing options...
Toysrme Posted April 20, 2007 Share Posted April 20, 2007 No to both questions. That's normal operation. Quote Link to comment Share on other sites More sharing options...
homemechanic Posted April 21, 2007 Share Posted April 21, 2007 No to both questions. That's normal operation. It's good to actually clean the oil out of the tube and pcv valve. Quote Link to comment Share on other sites More sharing options...
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