I have a '91 rs, 305 tbi, which has about 155,000 miles on it. The car runs and drives great, except for taking off. After the car has been running for awhile, and i come to a stop and idle, the car hesitates a little on the take-off and produces a little smoke. If i just stop and take off, the car won't smoke, but if it sits for just a little, she always blows smoke. It uses about 1qt every 1000 miles. What's wrong with my car? Any help will be greatly appreciated.