Toyota Camry

I have a 1996 toyota camry, 4 cylinder with 87,000 miles. There seems to be a oil leak and it is burning off the exhaust and causing the car to smoke. When I check the oil level, it doesn't go down any from the leak. My mechanic even put a dye in the oil to try to find where the oil is coming from, but still cant find it. The car runs great otherwise, but we are puzzled as to where the leak may be. Does anyone has any suggestions?
August 24, 2007.

He needs to run it until the smoke is there and up on the lift to get to the source.

Did you find soulution for your car becuase my car has similar prob to yours and until now I did not get soultion.

Aug 31, 2007.