The first step to troubleshooting a Honda Accord is trying to start the engine to determine if the problem is with the starter, the electrical system, the engine or another component. Novices can sometimes fix simple electrical and mechanical problems.
If the Accord has a standard key, drivers can often determine which component is likely failing by trying to start the engine. If the vehicle doesn't respond or make a sound, check the battery terminals near the engine to make sure it's connected properly, as corrosion and buildup breaks the electrical connection; cleaning the terminals may fix the problem.
If turning the key makes a clicking sound but the engine doesn't turn, the battery might be dead. In this case, the battery should be replaced if the battery cannot be successfully jump-started.
If the car cranks but doesn't start, the problem may lie with the starter or the fuel injector. Both cases, however, generally require expert help due to the complexity of these systems. Similarly, if the engine dies shortly after it starts, replace the fuel injector or have it professionally cleaned.
Engine misfires, especially while the car's engine is idle, can indicate a problem with one or more spark plugs. Checking or resetting the spark plugs may fix the problem.