Hello,
I am looking to find out instructions on do a tune up on a 91 honda civic dx. I have never done it before but it looks pretty simple. I have watched it done but there are certain things I do not understand. The tightness of the plug once it's in the order in which to change the plugs, and so on. If someone would be willing to walk me threw it I would be most appreciative.
Thank you,
Monica

Here's what I would include in a tune up for a 1991 Civic:

1. Change rotor, distributor cap, spark plug wires, fuel filter, air filter, and spark plugs (NGK only).
2. When you install new spark plugs, use a half pea-size drop of anti-seize compound (preferably high-temperature nickel) on lower threads, allowing rotation to spread. If you use too much, plugs will "coke" in the holes. Remove old plugs when the engine is "stone" cold, to decrease the chance of stripping the aluminum head. Since anti-seize compound is a lubricant, reduce specified torque by 20% to prevent over-torquing and stripping threads. Recommended torque is 156 in-lbs (dry) or 125 in-lbs (using anti-seize). It helps to use a "lock on" extension bar (Craftsman), so the socket does not pull off the extension bar and get stuck in the tube. It also helps to spray the spark plug socket's rubber insert with silicone spray, to help prevent this problem.
3. Here's a link for changing the fuel filter:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-honda-civics-46563-2.html#post224689