2003 Lexus ES300 with 92,000 miles. on 2003 Lexus ES300

I have a 2003 Lexus ES300 with 92,000 miles. I have a rear oil leak and plan on trying the Bar's Oil Additive before spending $2000 to have the Rear Main Seal repaired at the dealership. However, in the last few days, the car has lost acceleration from complete stops...just no pep. Never had a problem until now. No warning lights are coming on. The car starts right up, idles fine, just feels like it's hesitating. However, when it starts, a huge cloud of thick white smoke comes out the exhaust and then clears up. Could this problem be related to the oil leak or just coincidence? Any ideas?

by in Munster, IN on October 08, 2010
2 answers
ANSWER by on November 29, 2010
my lexus es 300 did that with cloud of with smoke and the car want start at all was told to replace whole engine
ANSWER by on May 30, 2011
I had a similar problem with an older Volvo in that a thick cloud of white smoke would occasionaly come out of its exhaust. It turned out to be a leaking diaphram in the brake booster. The leak allowed brake fluid to be drawn into the engine and when burned and exhausted the result was A HUGH WHITE CLOUD THAT COULD CONCEALED ANYONE'S GET-A-WAY.