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Old 03-11-2014   #63
Mitsumark
 
Join Date: Aug 2013
Location: NJ
Posts: 117
Default Re: 368 LT5 Drinking oil

Ok fellas an update..I changed the oil and switched to Mobil 1 15w50..Ive driven 2200 miles since my last post..I have also replaced all the plugs at that time so the plug pictured below only has 2200 miles on it..Oil consumption has been cut down since the last oil change..Probably cut in half..However it is still burning oil at an alarming rate(1qt 600miles) as seen by the plug below and it still smokes faintly at idle,and under moderate heavy accelaration..It does NOT smoke at all on decel in gear..Now remember earlier I ran compression test and it came back with great numbers..Since then on top of the plugs and oil change,I replaced both 02s,and both PCVs again just for good measure..My PCVs and piping were loaded with oil after 2200 miles again also..I have checked high and low for vac leaks and have found none..Car still pulls hard in every gear with no misfires..Idle is stable when sitting still however she hunts from 900-1500 when rolling in neutral until dead stop where she evens out at 900..I know from reading the plugs it is running pig rich as they are loaded with carbon,but its looks like oil is present also.All plugs look similar with 3 looking a bit worse than the others.Hunting idle,pig rich,burning oil..Is it possible I have a leaky plenum gasket that is undetectable?Ive triple checked spraying carb cleaner around the base of the entire plenum,inbetween runners,underneath..No change in idle..Can I be pulling oil into the injector housing somehow?What other way can oil be making it in to the combustion chamber?Im at a loss and Im extremely close to selling this car..Pic coming in 5..
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