22-03-14, 10:44 PM
You could try a push start it might get it going. But you've got compression and air so you need to confirm you've got spark and fuel. You could take the plugs out and ground them against the engine to check for spark. If you've got spark then it must be fuel. I'd try draining the carb bowls to check if you're getting fuel to the carbs and if there's water in the fuel. If you've got fuel in the bowls and it's still not firing then the jets must be blocked and you'll have to clean the carbs.