Uh...I think if you get one of these and use the "Torquening Slotted Camshanks" feature on your #4 Cylinder Camshank, that would make it stop working.
Alternatively, you could refer to the picture below and pick which one is the #4 fuel injector and simply unplug the control wire to it. That'll stop the fuel flow.
Hope this helps, and don't be tempted by the Bono Safety Glasses, they're crap. Besides, who wants to look at the world through rose colored lenses anyway??
