Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148)

Product Information

While you might be able to reset the gap to its proper setting, the electrodes will wear down to the point of no return and they must be replaced. For copper spark plugs, a coin-style gauge tool like the Lisle Spark Plug Gauge Gap is a time-tested way to get accurate measurements and make smooth adjustments. For more delicate iridium spark plugs, the Hotop Steel Gap Measuring Tool or CTA Tools 9 Wire Spark Plug Gap Gauge can be the best spark plug gap tool for the job. An incorrect spark plug gap can cause misfiring, poor fuel economy, a loss of power, and it can cause the plug to wear out faster.

For delicate spark plugs, the CTA 9-wire gap tool is a good option. It’s not as versatile as the other options on this list, but that may not be a problem for you if you’re only adjusting the spark plugs on one or two vehicles. As with the advice above, the first thing you should do is make sure you need to gap your spark plugs. If you bought spark plugs recommended for your vehicle, they’re likely gapped to the correct specifications already from the factory. There are other design elements that can affect how a spark plug responds to gapping. Spark plugs that have a “fine wire” core feature a thinner central electrode. This allows more metal to be put around it, conducting more electricity and making the spark plug more efficient. These thinner electrodes are more susceptible to damage, however. In all cases, the spark plug gap must be wide enough for a sufficiently energized spark, but not too wide that the spark skips at higher speeds — which will result in cylinder drag or engine rattling.The K-MOTOR Performance Spark Plug Gap Toolis the market’s best tool. It’s designed to be easy to use, accurate, and reliable. With its high-grade construction and durable design, you can be sure that this tool will last you for many years to come. Multiple electrode spark plugs are vehicle-specific and come with a factory gap that isn’t adjustable. Use a pair of needle-nose pliers to bend the ground strap up or down until it’s reached the correct height. Be careful not to touch the pliers to the center electrode or the surrounding porcelain. You can use some gapping tools for this but don’t use a round gapping tool, as this could damage the electrodes.

Before you begin gapping, make sure you have the right spark plug for your engine. For this task, you’ll need a gap tool like a feeler gauge or gap gauge. Setting the plug gap at the maximum recommended width allows for the largest gap with a strong, reliable ignition. This can be used for high-performance applications at the cost of re-gapping or replacing the spark plugs more frequently. Silver spark plugs. Of all the plug designs, silver offers the most conductivity. It is not an especially durable metal, however, so like iridium, you’ll want to be careful when adjusting the gap. Silver spark plugs are rare in automotive applications. You’re most likely to encounter them on older European cars. This is why you should have the perfect spark plug gap tool. While all spark plug gap tools do basically the same thing, they aren’t all the same. With its high-grade construction, ergonomic design, and accurate measurements, you can be sure that this tool will provide you with years of reliable performance.Like with any spark plug measurement tool, there is a slim margin for potential error in the measurements. For the price, though, this tool is quite accurate and a very useful tool to have in your garage for more than just adjusting spark plugs. The sizes range from 0.02 to 0.1 inches with 0.01 increments, and they are easy to read. The gapper is also designed with a key ring hole or a spark gap opener with a 7/16 inch diameter. The hole helps you accurately resize spark plugs with an electrode tool included. The tool can measure the clearance of any spark plug model. Some users claim that these are not as accurate as a feeler gauge, but I would have to disagree. These are just as accurate. But I do feel that a person must have some experience to use it properly.