1991 honda civic si 1.6 liter manual has a low spark issue?

It cranks but it won't start and I'm getting low spark. Any body please help.

Did you check for fuel? Did you check for spark? Did you check for compression? Once you've nailed it down to one, you can start checking components.
Got a fuel problem? Maybe it's a blown fuse, a bad main relay, or a bad fuel pump.
Got no spark? Maybe it's a bad coil pack, broken rotor, etc, etc.
Got no compression? Then you're out of luck.