vernon1023 Posted July 10, 2014 Share Posted July 10, 2014 Someone help me what I can do and what I can replace if Im blowing oil through the exhaust on my 2007 Mack CV713 . Please help! Quote Link to comment Share on other sites More sharing options...
BOB DINGSDALE Posted July 10, 2014 Share Posted July 10, 2014 happen to me with a 12 71 GM and found I had a hole in piston cause by faulty injector Quote Link to comment Share on other sites More sharing options...
Mackpro Posted July 10, 2014 Share Posted July 10, 2014 Probably turbo bad. But you might want to remove after cooler hose at intake manifold on driver side of engine and check for oil. If oil in intake then the turbo shot . If no oil in intake get engine hot , remove the turbo and cap the oil supply line and start it, hold a clean piece of cardboard a foot away from the exhaust manifold and watch for specks of oil. If you get oil there it could be valve seals/guide, to much idling or worse. Quote Link to comment Share on other sites More sharing options...
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