Timing belt broke while driving. Towed home and replaced the belt. Replaced valve cover gasket while doing this due to a leak. Replaced upper intake and throttle body gaskets as well. Lined up timing marks on crank and cam but can't get it to start. Compression test shows all cylinders to have compression. Fuel pressure is running at about 48 psi. Plugs were replaced and are getting fire. When cranking, air is sucking in and blowing out of intake as if the timing is 180 out but I have checked several times to make sure all marks are lined up. Can someone give a suggestion please?