The spark plug in your vehicle is what helps to ignite the air and fuel mixture that is present in the cylinders of your engine. Your Honda has fuel injectors that work to send fuel to the combustion chamber and pistons that compress this. The spark plugs have the job of igniting the mixture and pushing the pistons down. The process allows your engine to start. It's important for these components to be working at all times so that you're able to efficiently start your engine and keep it running smoothly for a long period of time. Driving with failing spark plugs can eventually cause your engine to experience problems. This is why replacing them as soon as you notice issues is so important. The first and most common thing you might experience are misfires coming from the engine. Misfires can cause your engine to run roughly and also have a hard time accelerating. Misfires are likely to cause your check engine light to come on as well. Of course, if your car is having trouble starting, this can also be a sign of wear and tear on the spark plugs. Make sure you get them looked at if they're stalling. Find the right OEM spark plugs for your Honda here on our site!