Start this project by disconnecting the battery. Basic mechanics safety tip #1. Then proceed by removing the air intake tube that stretches accross the engine compartment. Two of the three points are outlined in red in figures 3 and 4. The third point woud be where it connects to the air filter box. With that obstacle removed, you can easily identify and remove the fule injection sensors. There are six of them - three are indicated by blue rectangles in figure 3. Mark these so you can put them back on in the correct locations.