I've got an 89 celica GT with 160,000 miles on it and I've had this constant problem with the vehicle. If it sits for more than about 8 hours and I go to start it up, it emits a significant amount of blue smoke for the first couple seconds. After that it's fine, but I don't know why it emits the blue smoke at startup. It doesn't burn oil and it still gets pretty good gas mileage, so I'm just stumped. What do you guys think I can do to solve the problem? Please help me!!