Q: Honda won't start / cuts out at low fuel level. on 1990 Honda Civic

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Honda Civic runs with a full tank (10 gal.) of gas but when the fuel level gets down to 2.5 gal. of gas remaining, the car cuts out and will not start up. When it gets close to this lower fuel level it starts to cut out at stops but will start up again.
Fuel relay + ignition checked out O.K.
(1) Answer
Either your gas gauge and or fuel level sending unit is defective or you have a bunch of sediment in the bottom of your tank, that floats, when there is a lot of gas in the tank.