I have an old 86 GXL that I bought for a project car thats been sitting in some guys back yard for about 3 years...........I can get it to start and will run for about a minute than it just putts and dies. It'll do that 2 or 3 times then it won't start at all. I've replaced the spark plugs, fuel fliter, fuel pump and boiled out the gas tank. What do I do NOW??