If this happens, your car will start to have problems as your vehicle’s power supply will be unpredictable, which can cause issues with starting your vehicle.Īnother reason that spark plugs fail is that the gap that the spark has to jump becomes wider. This is often as a result of air and fuel mixing which can cause fuel pre-ignition. One of the main reasons spark plugs fail is that deposits build up on their surface. They are made of hardwearing, durable materials so that they can withstand extreme heat.Īlthough spark plugs last for years, they do eventually wear out. During its life span, a spark plug will go through extremes of temperatures. It’s a good idea to pay close attention to your cars spark plugs and replace it when you see signs of wear and tear.Īfter years of use, spark plugs will eventually stop working effectively and need replacing. Regularly replacing your vehicles spark plug will reduce the risk of your car developing starting problems. It’s a good idea to check the owner’s manual for advice many cars require their spark plugs to be changed once a year. This will vary slightly depending on what type of vehicle you own. It’s a good idea to replace your spark plug once you’ve driven between 30,000 and 100,000 miles. Spark plugs are generally a long-lasting component, but they will need to be changed occasionally. How Often Does a Spark Plug Need Replacing? They can also burn off any fuel deposits or contaminants that come from the engine. Spark plugs are very strong and durable as they can cope with high temperatures as well as pressure from the cylinders. Your vehicle will then maintain the power to burn the compressed air-fuel mixture. Pistons inside the car engine will then begin to move, and your vehicle will power up. They are a small dynamo that supplies a spark that powers up a car’s combustion. Spark plugs are small but mighty and are a vital part of your car’s engine. How Much Does Spark Plug Replacement Cost? Why Does Your Spark Plug Need Replacing?ģ. How Often Does a Spark Plug Need Replacing?Ģ. If there’s something wrong with it then it’s worth sorting out as soon as possible.1. A faulty spark plug can lead to far greater issues with your engine and end up costing you plenty in the long run. Unless something goes wrong they typically last around 40,000-50,000km The price for new spark plugs starts at around $5 a plug and can go up to $50 for the high performance ones.Ī full replacement from a mechanic can cost in the range of $50 to $350 depending on the level of difficulty of the job. It’s not a terribly hard job and those who are mechanically minded can do it themselves. How much does a spark plug replacement cost? A diagnostic or road test is performed to ensure everything is in working order.The new spark plug is bolted into the socket and the ignition cable is reconnected.The spark plug is unbolted with a spark plug socket and removed.Some newer models require the intake manifold to be removed to access the plugs.
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