'93 Toyota Camry LE 4 Cyl - Three days ago I put some gas in my completely empty tank and about 10 miles later it starting acting like it was missing (putting & vibrating) very badly. I turned the car off & on a few times and it stopped the next day it started again and hasn't stopped. I had the oil changed - all fluid levels were okay. I added Slick 50 Fuel System treatment to about a half a tank of gas - it helped by giving me a little more power upon acceleration but it's still putting & vibrating bad - mainly when idle or coming to a stop - Really bad when in reverse with the AC on????? Any ideas where I should start?