You'll know when a spark plug breaks. The question is, do you know how to safely replace a broken spark plug and which tools ...

Spark plugs are essential for cars with internal combustion engines. However, they can seize up and get stuck. Here's how to ...

The spark plug is essentially a high-voltage “bridge” that ignites gas vapors inside your engine and makes your car go. On average, spark plugs should be replaced every 50-100,000 miles—the good news ...