WRX has a strange issue

Ray

Ray

The Northernah'
SO.... dads wrx has slowly been developing some kind of smoking issue. Just this weekend he took it Evergreen for a sticker and they put a new O2 sesnor in (had CEL for it) and said it should stop the problem they even hooked it up to their diagnostic machine and that said nothing was wrong but its still doing it just as bad:/ The smoke isn't an oil smoke its a VERY rich smoke, it happens at stoplights when the car isn't moving, or after moving at a stop sign when u hit the gas, or when just downshifting and getting into it, its quite a cloud of smoke were talkin about here...any input anyone?
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assuming the scan tool said everything was ok....fuel trim/cats/ etc.......you say its not oil, checked it??? hows the coolant?? what else is there to burn besides fuel, oil or coolant?

 
scan tool said all was ok but it smells really rich!! i forgot to mention its COBB stage 2

 
has he been using any oil but i would pull the plugs cause they will usaully so what it is on them if its being burned

 
so upon further analysis, it does have a slight oil smell, also its not building as much boost as it used to, hitting 15 max now used to be 17-18.5 is turbo headed out the door?

 
if turbo is headed south, it will start showing its intent by emitting oily whitish grey smoke. if turbo is really really headed south, it'll leave oil residue on rear of car -- sort of oil-spotting that may look like raindrops

the fact that this car smokes at idle and not under boost makes me suspect head gasket. check coolant tank for oily sheen (oil mixing w/coolant) , check dipstick and underside of oil filler cap for whitish foaming (coolant mixing w/oil) if you find the latter, repair offending parts right away, cuz if u run it for long with coolant mixed with oil you'll also have to redo engine bearings as well as the H/Gs. don't axe how I learnt this .....

 
it smokes under boost as well, and the smoke is a whiteish-grey thanks for all the input everyone!

 
well that would be a bitter-sweet, when it breaks make it bigger/better then before I always say
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