Huntington Beach Auto Repair

Spark plugs are small parts, but they have a big job every time the engine starts. They ignite the air-fuel mixture in the cylinders, keeping the engine firing correctly. When they are fresh, most drivers do not think about them. As they wear, the changes can be subtle at first. The engine may crank longer, idle a little rougher, use more fuel, or feel weaker when accelerating. Knowing how long spark plugs last helps you replace them before those symptoms turn into misfires and extra strain on other parts. How Long Spark Plugs Usually Last Spark plug lifespan depends on the plug type and the engine design. Older copper spark plugs can wear out much sooner, sometimes around 30,000 miles. Platinum and iridium plugs tend to last longer, and many modern vehicles can go 60,000 to 100,000 miles before replacement is due. That range is not a promise for every vehicle. The owner’s manual is the best place to start because the manufacturer sets the interval based on t ... read more