i would check the timing to make sure its right, pull out all spark plugs and stick a real long extension into the #1 spark plug hole (closest to the crank) and set it on the piston... get a rachet and socket to fit your crank bolt... undo the tensioner, and pull your belt off... carefully turn your cam gears and face both arrows up. (use a 12mm socket and rachet and set it on tighten, and use that to turn your cams)... once you have the arrows up, turn your crank slowly and watch that extension it will move up or down, turn it till the extension is sticking out of the hole at its highest point. that is called top dead center.... then carefully with out turning the crank, put your timing belt back on and tighten tensioner... reinsert all your plugs. make sure to pull your rachet off the crank before you start it...make sure everything is hooked up, and start her up... if you have any questions let me know... if this fixes your problem please let us know.