![]() How often should you replace spark plugs? As plugs age, they build up carbon buildup which will cause a loss of efficiency over time. However, some cars complicate this by having various configurations of wiring made necessary by other components being housed there. Newer-model vehicles have their spark plugs in a central position under the hood due to space efficiency. Spark plug wires shield the spark from electrical interference. It’s important to know how old your spark plugs are because they can lead to issues with fuel economy, performance, and power. Why does it matter how old my spark plugs are? Carbon deposits will also be seen on the electrodes of a spark plug in which excessive fuel or oil has been leaking into it. These leaks will cause carbon deposits on the plugs. This can also lead to poor acceleration and loss of power.Īnother sign that your car’s spark plugs need replacing is if they’re blackened, which might mean excessive fuel or oil leaking into them. If you continue driving like this, your engine will most likely become damaged!Īnother symptom of a bad spark plug is the engine may run roughly when you first start it. This is because the car will be losing power and it may stall. The symptoms of a bad spark plug typically are misfiring or poor performance. ![]() What are the symptoms of a bad spark plug? This difference in size can cause the plug to arc and spark, which may lead to misfiring or poor acceleration. For example, the spark plugs in your car may have a different plug gap than what is recommended for your engine. ![]() However, even new spark plugs from well-known brands can be wrong for your vehicle. Most people assume that only old or damaged plugs can cause problems. Spark plugs need to be matched with their proper ignition system, which means you want a plug that has the same type as your original spark plug. The result is a loss of power and the car may stall. For example, using an inductive spark plug with a resistance-type ignition system will cause misfiring and poor performance. It is possible that incorrect spark plugs can damage the engine of the car. Reference Can wrong spark plug damage engine.What does a good spark plug spark look like?.Can bad spark plugs cause transmission problems?.How tight should spark plugs be tightened?.How often should you replace spark plugs?.Why does it matter how old my spark plugs are?.What are the symptoms of a bad spark plug?.
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