2001 Ford E250 not properly long term stored. I can get it to crank/turn over but it will not run at all. It has 200,000 miles on it but has never had this problem before. I shoot a bit of starting fluid and it'll run for a split second. So I know its got fire. Any help would be greatly appreciated.
You should start with:
1) have you got sufficient fuel? How much in the tank?
2) is it fresh - old / degraded fuel may not ignite.
3) is it getting to the cylinders? Fuel filter? Carbs blocked? Spark plugs getting wet?
You may need to clean the old fuel out and get fresh fuel all through the system.