248/232 cam swap issues, car not starting

[vin diesel]

yesterday when i was taking out my plugs i saw that i have a bad valve cover gasket because a few of my spark plugs were dripping in oil. so i got new plugs and new gasket. i took off my valve cover, motor at tdc. marked the cam and gear , pulled the intake cam, put the 248 in, and set it back 4 teeth. put everything back on. but car wont start. so today i took the valve cover off and i saw that the cam was only 2 teeth from the mark i made. so what do i do next.