How do you change the spark plugs on a 92 achieva s that has quad cam there seems to be a fuel rod in the way?

Answer 1

It sounds like you are looking at the fuel injectors rather than the spark plugs. The spark plugs are located under the large cover on top of the engine that identifies it as a quad 4 engine.
There should be 4 fasteners located towards the center of the cover if memory serves.
Do not try to remove the other around the outer edge of the cover.
Make sure you remove the electrical connector and the previously mentioned fasteners, and pull straight up on the cover.
There will be resistance to this because you are pulling the spark plug boots off as you lift.
Since the spark plugs are recessed there may be debris around the spark plug holes that will fall into the cylinder and could damage your engine.
Make sure that you remove this debris before removing the plugs.
Blowing it off will air or even vacuuming could work but but remember that this is very important