What would the symptoms be if my intake wasn't totally sealed? I replaced a broken exhaust manifold and have not been able to get the engine to run since then. I figure that there are 2 reasons it's not running, either the manifold is allow air to leak in or when I pulled the carb (just laid it on it's side on the valve cover) some gunk loosened up and clogged something. Right now it will start if I pump it 5 or 6 times, then give it full throtle once it fires. It will not idle. It's a 74 F engine. Thanks :'( Lane