![]() Iridium plugs will come pre-gapped the gap might not be equivalent to every vehicle manufacturer's recommendation, but the idea is that, since iridium plugs are more efficient, this small difference isn't significant. Some maintain that iridium plugs still need to be gapped, while others claim that gapping isn't required.īut it's generally recommended to not gap iridium spark plugs. When it comes to iridium spark plugs, however, there is some debate. The gapping procedure we'll discuss briefly applies to these types of spark plugs. They are less expensive and don't last as long as higher-end spark plugs. If you purchase something through a link on this page, we may get a commission, so thank you!īefore we start talking more about the gapping procedure, it's important to briefly mention that whether or not gapping is necessary depends on the type of spark plug.įor instance, copper spark plugs require gapping. Without further ado, let's get into it.īefore you continue reading, let us say we hope you find the links here useful. We'll also talk about how to close the gap without a tool, whether or not spark plugs have to be perfectly gapped, how tight a spark plug should be, and more. In this post, we'll discuss the process in greater detail. If you still have some questions about how to properly close the gap on a spark plug, don't worry. Repeat the process until the gap is equivalent to the manufacturer's specification.Insert the side/ground electrode of the spark plug into the hole on the gap tool, and apply gentle pressure to slightly widen or close the gap.Use the perimeter portion of the gap tool to measure the spark plug's pre-gap size.Find the manufacturer's recommended spark plug gap in the owner's manual for your vehicle.The only things you'll need are a spark plug gap tool and the owner's manual for your vehicle. You're in luck because we did the research to bring you the answer.Ĭlosing the gap on a spark plug is fairly simple. If this is your first time doing a spark plug replacement yourself, you might be wondering how to close the gap on the plugs to ensure smooth, consistent ignition. Spark plugs ignite the gasoline, helping to create power and drive the engine. The spark plug is one of the most important components in a gasoline engine.
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