If you don't remove the fuel pressure from the system there is a good chance that you will get fuel under pressure spraying all over everything when you remove the injector. It is best to play it safe, remove the fuse and do the engine crank/run to remove the fuel pressure. It is a simple thing that can help prevent a fire or save your eyes from being blasted with gas. I put motor oil on the injector O rings before installing... Doing that makes the O rings slippery so things go together more easy and it reduces the chance of damaging the O rings.
I think I remember buying the injector from Amazon. When I bought this injector two years ago I remember it was $25 USD for one and $100 USD for four in the listing. The injectors that you need are the same color as the ones in my video. The injector in this video will work on cars built from 1991 to 1999 with the GA16DE engine. The GA16DE is the 1.6 liter engine. www.amazon.com/s?k=GA16DE+injector&crid=1LXX15745HY6&sprefix=ga16de+injector%2Caps%2C90&ref=nb_sb_noss www.ebay.ph/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=GA16DE+injector&_sacat=0
