Fuel rails and fuel injectors

There is really no need to remove these but the manual said to, you will notice rubber collars that have a pull tab on them they are designed to slip inside the gap of the quick connector tines and splay them out and lock them in so that the fuel hose does not come undone with fuel pressure. I suggest you do not take them off if you can help it the manual says to replace the o rings with new ones if you do remove them. I soaked the whole assembly in sea foam as I continued to work.