Hi all just bought my first lexus it's a 92 sc300
I started it and it it just pouring white smoke out exhaust. It's also dripping oil mixed with fuel out the intake so I guess oils is getting burned in cylinders. It idles and runs really rough and shakes! Please help and tell me what gaskets I need to replace and so on.

 

Not sure if the below link will help you, I thought maybe
Good luck

https://www.clublexus.com/forums/per...you-think.html

 

White smoke? Could be headgasket. What color is your engine coolant?

If it's slightly blue smoke then it's either a ring or a valve stem.

 

Sounds like it blew a head gasket...

 

Hey, first thing, open your oil cap and see if you got white milkshake on inside of it, if so you are getting blow by, and if you getting white smoke you are getting coolant mixed with oil. You can try this stuff called stop smoke, it will not mix with coolant, it's really thick but to my opinion I also think you blew the head gasket. Good luck with it and sorry to hear that.

 

It's not white inside oil the oil got fuel in it somehow and I think it's white blueish smoke

 

I just got a hint that it could be stuck valves therefore pushing gas and oil out of the intake, could this be it?

 

You could have bad valve seals, usually bad valve seals manifest themselves most visibly on start up. Also the the oil you see in the runners could be the oil leaving from the valve seals. To be honest you're going to have to at least open up your heads and start looking around and probably replace the valve seals.
worst case scenario would probably replace valve seals AND headgasket if it turns out you end up having a small headgasket leak also contributing to the white smoke.