Now I have heard more than enough people complain about having white/blue smoke come from the exhaust pipes of there SC400's. Now people on this site have been giving resonable but FALSE solutions to the problem. I would like to emphasize that this is NOT an uncommon problem, it is verry common as this should be pinned.
The solution to the problem is FUEL INJECTOR(S). They are permanently stuck open which results in the car running to rich, giving off white smoke and you will also possibly notice another trait: The car shakes horribly. This is a horrible horrible catastophy that I would not wish anyone to experience. But it is happening ALOT. Just read the forum.
Now with all of that said, the price is about 1200 to replace all 8. Not bad, considering the other alternative(s)
1. Bad valve guides (2000-5000) or engine swap.
2. Piston rings (2000-5000) or engine swap
3. Oil mixing with coolant (engine swap)
All of these things usually = sell car for most. I would NOT it has been sitting in my garage for 1 year, in and out of 5 repair shops which told me to sell the car (that I just bought). Please pin this it will save these poor souls alot of greif!
Just Pin it. I mean the silly, useless "What year lexus do you have?" is up there.