Do it yourself, change the spark plugs on your Honda Civic engine 1.6L, manufactured in the year 1998. The repair process is the same on models produced in the years 1992, 1993, 1994, 1995, 1996, 1997, 1999 and 2000. You will require four new spark plugs from your auto parts shop, a 5/8 spark plug socket wrench with an extension and optional, some dielectric grease. The repair process is easy and it will not take you more than 20 minutes.
First of all, open the hood of your car and go to the battery. We strongly recommend you to unplug the negative cable to avoid any errors or any type of electrical damage on components. Go to the engine and locate the four ignition coils above it (shown with red arrows in the next picture).
Removing the coils is a simple task. Just pull up firmly the cables that power them up. Then, using the 5/8 spark plug socket wrench with an extension, unscrew the old spark plugs and remove them from their sockets (see image below).
Install the proper replacements. We suggest you to check the compatibility of the new spark plugs before buying them. After you tighten them on the engine, you can use a little bit of dielectric grease if you have, placed just inside the tip of the ignition coil, to protect its rubber part. Install every coil back, check the proper connection of its cable and, at the end, reconnect the negative cable on the battery. This is all you need to do if you wish to replace the spark plugs on your Honda Civic 1.6L, manufactured in the year 1998.