White smoke from exhaust when I give her gas, not on idle(strange?). was having problems making her hold an idle so I replaced the pcv valve and air filter(the previous was covered in oil from an oil leak) and cleaned out the throttle w/ carb cleaner. She idled on start up and I drove around the parking lot for a little bit, when I tried to accel up to 45 I started billowing white smoke. Please help.