teniente Posted January 17, 2018 Share Posted January 17, 2018 HELLO EVERYONE I have a mack vision cx613 2001 e7 427. now the problem when I have the truck in idle for lets say 20 oil start coming out of the manifold. and just yesterday for some reason my jake brake stopped working any sugestions thank you Quote Link to comment Share on other sites More sharing options...
j hancock Posted January 18, 2018 Share Posted January 18, 2018 I am not a new engine guy but this may help. https://www.bigmacktrucks.com/topic/9156-strange-e7-oil-leak/ Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
Mackpro Posted January 18, 2018 Share Posted January 18, 2018 Im voting freeze plug fell out of end of rocker arm shaft. Also, the bottom stud on the exhaust manifold on every ETECH style engine is drilled all the way into the push tube bore. Oil can leak past the treads and make it look like oil is coming out of exhaust manifold. A missing plug on the rocker arm shaft ( they just fall out sometimes) can flood the top of the motor with oil and cause too much oil in the push tube bores and oil seepage. Quote Link to comment Share on other sites More sharing options...
fjh Posted January 18, 2018 Share Posted January 18, 2018 (Don't Laugh had this happen for a no engine brake complaint ) Not implying anything here However Aside from no oil in the pan. I vote freeze plug too! Point being check the simple first! Quote Link to comment Share on other sites More sharing options...
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