I have the haynes manual, and was going to attempt replacing them today but I noticed how little room there is between the intake manifold and the engine compared to what is shown on the manual.do I have to remove the entire intake manifold, or are there any tips going about this. I couldnt even fit my hand. Any help is appreciated.

on a 5s, i pull the valve cover off, that gives good access to the 2 12mm bolts that holds the fuel rail in place.