Posts Tagged: Spark Plug Replacement

Why Spark Plugs Fail and How to Avoid It

Spark Plug Failure: What Causes Spark Plugs to Fail and How to Prevent It Quick Summary Spark plugs are one of the hardest-working components in your engine. They must ignite the air-fuel mixture thousands of times per minute while enduring temperatures that can exceed 4,500°F inside the combustion chamber. When a spark plug fails, the result can be engine misfires, rough idle, poor fuel economy, hard starting, and even damage to the catalytic converter. As an ASE Master Technician, I’ve found that most spark plug failures aren’t caused by defective … Read More