This can cause the engine to hesitate, which will make it run at a rough idle.
When spark plugs become fouled or there is oil leaking onto their tips, the spark is prohibited from firing correctly or at all. If you don’t/haven’t experienced any of these symptoms with your car as of late, then you probably have good spark plugs. There are several warning signs that you have a bad spark plug and an immediate change is needed. Signs That Your Spark Plugs Need Replaced How Old Is Your Vehicle?Īs vehicles age, leaks start to develop, gaskets and seals wear out, and components wear down, creating increasingly larger gaps between moving parts.ĭue to this added wear, your plugs need to be examined more often for premature wear, and may need changed more frequently. O-ring seal replacements will usually fix this issue, but not always. If you know your vehicle is leaking oil onto the plugs, you will need to change them more often.Īs oil leaks onto the spark plugs, they will corrode faster, and carbon buildup will result from unburned fuel. Is There Any Oil Leaking onto Your Spark Plugs? Stop-and-go traffic, frequent towing, and spirited driving all contribute to a high wear rate.įrequent highway commuting and infrequent driving don’t cause as much wear on engine components in general. Vehicles that are driven hard usually require new spark plugs more frequently. Iridium and platinum are more durable materials, but the electrical current doesn’t flow as freely through either metal. Spark plugs are made of different types of materials.Ĭopper, iridium, and platinum are common metals, and all have different lifespansĬopper is good for electrical current, but doesn’t last as long as both iridium and platinum. There are many factors that affect whether you should change your plugs sooner than recommended, or whether you will be safe to wait some extra time. What Factors Affect How Often You Should Replace the Spark Plugs? Every 100,000 Miles or Moreġ00,000-mile change intervals is pushing the envelope, but it is becoming possible with the best high-performance models on the market.Įven high-performance plugs are going to be worn by the time 100,000 miles come around, but not necessarily to the point where performance is dramatically affected. Many mechanics and manufacturers are beginning to set 80,000 miles as the new standard for the industry, but most mechanics still suggest changing them sooner. Most quality spark plugs need changing at around 60,000 miles, and this is currently the most widely accepted change interval for most modern plug types. Every 20,000 to 30,000 Milesģ0,000 miles has been accepted for years as the most common replacement interval.Įven today, low-quality plugs or those made with a less durable material ( such as copper) should be replaced every 20,000 to 30,000 miles. With that being said, there are four main milestone change intervals. The change intervals can vary greatly depending on the types of spark plugs being used, the type of vehicle, and a host of other factors as well.
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