after installing the timing chain is there anything I need to do? My vehicle isn't starting

Hello, Start with a code scanner. See if there are any trouble codes recorded on the engine control module. Also, I have seen timing marks look a little off at TDC, and I have seen timing marks that line up at 40 degrees after TDC, but I always stick with the timing marks, minus a little slack to make sure the timing marks will be aligned once the chain or belt is tight. Here is how to check it: Remove the timing cover, see if the dots still line up. If they do, you are timed correctly, if not, you were off a tooth. If you have to adjust the chain position, line everything up perfectly straight, put the chain on, and turn the engine 4 full rotations. If the dots still line up, you are good to go, if not, line the dos up perfect, and give a little slack so the chain dots will line up under tension.