Troubleshooting a 1993 Honda Accord that won't start begins with a basic understanding of what is needed for the engine to start. Fuel mixed with air in the proper ratio, introduced into the cylinders at the proper time (valve timing) and ignited by the ignition system at the proper time (ignition spark and timing) are all requirements of the engine for it to run. When you grasp that concept, you can determine the problem through a process of elimination.
Remove the two 10 mm bolts on the upper timing cover. Remove the two 10 mm nuts that attach the valve cover to the cylinder head on top of the motor. Slide the upper timing cover out and watch the timing gear as an assistant tries to start the engine. If the engine seems to spin but the upper gear doesn't move, replace the timing belt. This is a common cause for a Honda that won't start.
Unplug one of the plug wires and one of the fuel injector electrical connectors. Install an injector test light (noid) into the injector electrical connector and push a small screwdriver into the end of the plug wire so it contacts the terminal in the plug wire boot. Hold the screwdriver close to the engine block and have a helper try to start the engine. If the noid doesn't flash or the plug wire doesn't spark, replace the distributor. On the 1993 Honda Accord, the trigger for the injectors and the ignition system is built into the distributor and cannot be replaced by itself.
Spray carburetor cleaner into the throttle body of the Honda. Try to start the engine. If it starts momentarily and then stalls, check the fuel pump fuse using an automotive circuit tester to probe each of the test pins on the fuel pump fuse located in the under-hood fuse block. Replace the fuse if one pin has power and the other pin has a ground. If the fuse is good and has power on both test pins, use the circuit tester to check for power at the fuel pump located under the rear seat cushion. If power is present, replace the fuel pump. If power is not present, replace the fuel pump relay in the under-hood fuse block.
