How Often Should You Replace Spark Plugs? This becomes a more likely issue the older your vehicle becomes. If you have a worn O-ring seal, oil can leak onto the tip of the plug, preventing a spark. Seals and gaskets are often one of the first things to wear out in a vehicle, as they are often made of rubber, plastic, or silicone. The tip of each spark plug is exposed to each explosion, which inevitably causes wear over time. These explosions cause massive amounts of heat and pressure repeatedly within the combustion chamber. Many people take for granted that there is a literal explosion occurring within their engines thousands of times per minute. This fouling is especially common in vehicles with gasoline direct injection fuel systems, with an overly rich injection of fuel into the engine, or when poor quality gasoline is consistently used for fueling your vehicle. This buildup can prevent the spark from firing correctly, and will cause a less efficient or non-existent spark. Carbon BuildupĪs fuel combusts within the combustion chamber, the remnants of these explosions can produce a thick carbon buildup on the tip of the spark plug if more fuel than oxygen enters the engine. Electrode WearĪ literal spark jumps from the ground electrode to the center electrode on the tip of the spark plug.Īs this occurs over thousands of times per minute over the life of the electrode, the electrodes wear and the spark becomes less efficient. They all contribute to several reasons you should change your spark plugs. Why Should You Change the Spark Plugs in Your Vehicle?Īny component inside the engine is subjected to large amounts of frictional heat from moving parts, pressurized fuel within the fuel system, and pressure from the explosions which occur inside the combustion chamber.īecause spark plugs are inserted into the combustion chamber, they are subjected to each of these forces. If this spark doesn’t occur or is prevented from firing at its optimal capacity, the engine will struggle to start, run correctly, or even stall. The spark ignites the air-fuel mixture entering the engine through the air intake and fuel injectors, pushing the engine’s pistons down and creating the engine’s power. They have two electrodes with a gap between them, over which electricity travels and creates a spark. These are small devices inserted into the combustion chamber of an engine which create a spark that makes an engine start and run. 6 Are There Any Other Tips I Should Know About Spark Plug Change Intervals?.
5.4 Your Vehicle Experiences Slow or Jerky Acceleration.5 What Are Some Warning Signs That Your Spark Plugs Are Overdue to Be Changed?.4.3 Is There Any Oil Leaking onto Your Spark Plugs?.4.1 What Type of Spark Plug Are You Using?.
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