Well I'm very frustrated at my 3.3 because it is supposed to be new and in and out it looks new but I put it in and started it and I can't keep it running, the only way to get it to run is prime it until if fires but after it fires you have to like half prime it by that I mean you can't block all the exhaust but like just enough to like keep it primed but I've changed the gas tank twice and the exhaust and fuel lines along with the glow plug and the carb settings are fine I have no clue now!!!!!!!