TysonV Posted December 31, 2012 Share Posted December 31, 2012 So, I have a 2007 CHN613 with a AC-460P motor. Durning the winter months I need to use high idel overnight as I need to sleep in pullouts and it's about -20 deg. here in Canada. What happenes is after running for the night my turbo is leaking oil into the exhaust. We put a new turbo on thinking the old one was done for, but I am still having the same problem. Any sugestions? Quote Tyson VandeVelde Link to comment Share on other sites More sharing options...
staxx Posted December 31, 2012 Share Posted December 31, 2012 Turbo needs a little boost or positive pressure to keep oil from leaking around seal this is normal for most of these turbos. Quote Link to comment Share on other sites More sharing options...
TysonV Posted January 1, 2013 Author Share Posted January 1, 2013 Ok, what I've noticed is that after I idle up around 900-1100 rpm I'll get about 4-7 lbs of boot for around 15 mins, then it drops to 0 and will not get boost until i put a load on the engine, jsut reving will not generate any boost. replaced the control valve on the opposite side of the engine for the actuator, still same thing. Quote Tyson VandeVelde Link to comment Share on other sites More sharing options...
farmer52 Posted January 1, 2013 Share Posted January 1, 2013 Possibly valve guides and/or seals. How many "clicks" on the engine? Do you notice any oil leaking from the exhaust manifold? Is the oil only on the exhaust side of the turbo? Did you pull the inlet pipe off the turbo and look for oil on the turbo inlet? Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment Share on other sites More sharing options...
TysonV Posted January 1, 2013 Author Share Posted January 1, 2013 460,000 miles, engine is dry for oil leaks, pulled pipe going to the air to air off nothing on the inlet side of the turbo Quote Tyson VandeVelde Link to comment Share on other sites More sharing options...
staxx Posted January 2, 2013 Share Posted January 2, 2013 Should be able to have local turbo shop put a seal kit in it , not sure though maybe check for boost leaks ,.have seen plenty of turbos leak there most customers dont care to fix too exspensive for new turbo Quote Link to comment Share on other sites More sharing options...
TysonV Posted January 4, 2013 Author Share Posted January 4, 2013 Had a crack in the EGR hose that runs from the manifold to the EGR cooler, got that welded up and a new one ordered...that was a recent development though. The loosing boost while ideling has been going on for a year or so now. Quote Tyson VandeVelde Link to comment Share on other sites More sharing options...
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