86 Plymouth caravell SE starts but won't go

I have a 1986 plymouth caravell se with 100,000 miles on it. It has a 2.5l engine andan automatic transmission. It has been sitting for 2 years and we just tried to run it we put a brand new battery in it, she starts but won't go. My father blew the gas line and you could hear bubbles in the gas tank so we're guessing the line is clear, what else could it be. Thanks for your help.