I have a 90 lumina with a 3.1L it is a euro sport and black(not like it matters). The car runs great, still plenty of power even at 180,000. The problem i have is when the car has been running for over a hour, and is plenty warm, i may shut off the car and come back in about 20 min. when i then try to start the car. it will idle bad. it is kinda like it is missing on one piston. if i push the foot feed (I like to call it that because it makes me sound like i am 65) it will miss and sputter, i then put it in drive and take off.....after i drive for about 100 feet the car will run fine again....what is the problem, and ideas?.....
I am sorry for the bad writing, i am in a hurry and very tired....
thanks