Most vehicles have a life expectancy on the Spark Plugs of 100,000 miles if they are double platinum spark plugs. Standard Spark Plugs should be changed about every 30,000 miles to avoid damage to other parts. You should change Double Platinum Spark plugs at about 80,000. Spark Plugs misfiring can cause a Check Engine light issue and a misfire code can be stored, however a misfire code can be many other issues. Prolonging the change of your Spark Plugs can cause other problems with spark plug wires, coils and modules. When your Check Engine Light comes on or you notice that your engine is not running it's normal way always take your vehicle to a service shop and have checked.
