89 supra turbo, there is oil in the intake and inside the intercooler piping, i need to do a compression check. how do you tell if it is the rings or the valve seals? or the turbo. the turbo doesent have any play in it. it smokes when it is idleing for like 4 minutes, it just smokes continuously blue smoke but it doesent do it going down the road unless i get on it hard. it will smoke when i take off from a stop usually. i can see the smoke really well becouse my muffler had turn ups on it. thanx