When loading your groceries onto the back of your Honda Civic Si hatchback, the hatch struts keep the lift gate up and prevent it from banging on your head. The hatch struts also allow easy access to the rear compartment of the vehicle, making you open the hatch without that much effort. They are gas springs that consist of piston, piston housing, piston rod, seals, and the steering. They are filled with nitrogen gas and some amount of oil that allow for the systematic assisting when opening as well as the dampening when closing the hatch. Unfortunately, though, the Honda Civic hatch strut is not exempted from wear and may go bad over time. Here are the most common signs that tell of your need to replace them soon.
Your Honda Civic hatch strut aids you in lifting up the tailgate so that you will only use a minimum amount of effort. But without the pressure from the piston, lifting the hatch up is going to be such a cumbersome task. When nicks and other elements that attract dust and grit stick to the rods, these can create damage to the seals and the piston. This reduces the pressure and hence, renders the struts ineffective in helping you open up the hatch.
If at the next time you put your groceries or any other load at the back of your car, you experience the slamming of the hatch on top of your head, it means that you seriously need to replace them. This is because of the loss of hydraulic pressure in the struts that results in an unsupported hatch.
Another cause of this is the presence of moisture in the struts. Even the smallest hole will allow water to enter the corners of the hatch and affect the hatch struts' ability to function properly. So even if the piston elements are all still in great condition, if the rods get wet with water or whatever liquid that breaks in through the seams around the hatch, trying to keep it open while loading or unloading your stuff will be an impossible charge.