Posted on 7/29/2025
Summer driving should be smooth and enjoyable—but when your engine begins to hesitate or stall unexpectedly, it can quickly ruin your trip. One often-overlooked cause of engine trouble, especially in warmer months, is worn or faulty spark plugs. While they’re small and inexpensive parts, spark plugs play a crucial role in engine performance. If they aren’t working properly, your vehicle may stall, misfire, or struggle to start, especially in hot conditions. We’ll explain how bad spark plugs affect your car, why symptoms often worsen in the summer, and what you can do to keep your engine running smoothly. Why Spark Plugs Are So Important Spark plugs are responsible for igniting the air-fuel mixture inside your engine’s cylinders. Every time your engine runs, each spark plug produces a spark at precisely the right moment, creating a controlled explosion that powers the engine. This happens thousands of times per minute, and it has to be c ... read more