Usually when you put the pedal on the floor, it is, "clear flood mode", too much gas. You need to check correct fuel pressure, use a fuel pressure gage. Some of the national brand auto stores used to loan out a fuel pressure. You may have to put up a deposit but, you get it back when you take the gage back.
Once you build pressure, turn the key off. See if the pressure holds for a bit? If the pressure drops like a rock, you have a leak somewhere.
It wouldn't hurt to give it a tune-up. Anymore, 02 sensors are part of a tune-up.
After you erase codes, did you drive it for a bit to see if any codes come back?
Monday, January 20th, 2014 AT 12:00 PM