immediately figured out why there was silicon in 2 spots after ending the video. it is definetely a good idea to put 2 dabs on the block side before reinstalling the valve cover.. this is where the timing cover meets the block.
have to, no. but it's always a good idea to pull the fuel pump relay and crank the engine over for a sec to drain the pressure. save you from spraying fuel everywhere. i honestly don't recall if this car holds pressure or not, but most newer vehicles do.
*Are you going to keep talking or will you show me the fuel injector location? - i believe this is what you were trying to say. if you are that impatient or ungrateful to even have a video at all to show you things you obviously don't know how to do, there is an option to speed the video up. i'd advise you to use it. but if you don't even know where the fuel injector is, you should probably just take it to a mechanic...