Please note that this will vary for each spark plug brand, manufacturer, and material. For example, if your gap target is 0.44mm we suggest to using 0.40mm this way when it spring back you will get it to 0.44mm. If they do spring back we suggest using a measurement 2mm less than what you are aiming for. NOTE:It is normal for some spark plugs electrode springs back. This tool measures precise gaps, eliminates misfires and error codes due to inaccurate gaps on your spark plugs. A must-have tool for anyone who wants to maintain and tune their engine for optimal performance. The gap is a critical parameter that affects the ignition and combustion process in an engine, and it needs to be set correctly to ensure optimal performance and fuel efficiency. We have done the research and put in the hours to enhance the performance, durability, and ignitability of plugs for domestic and import engines.Įxplore the benefits of our most advanced products like our iridium spark plugs at spark plug gap tool is a device used to adjust the gap between the center and ground electrodes on a spark plug. Iridium Ultra® plugs feature a laser-welded iridium finewire center electrode for optimal fuel efficiency, acceleration, and focused ignitability for long-lasting performance.Īutolite ® has been the trusted developer of spark plugs for over 85 years. This makes it the preferred gapping tool for shop techs to use when setting customers up with the right ignition products for their needs.Īutolite Iridium Ultra ® Spark Plugs are the highest performance offering from Autolite ® and provide the same precision and reliability of an engineered OE replacement plug. Wire loop gauges are not only accurate, but they minimize the chances of incidental damage to the plug when used correctly. Because of this, it became clear over the years that a more precise gapping tool like a wire loop gauge is recommended for this task. Why Gapping Matters Check Pre-Gapped Plugs Using a Feeler Gauge or Wire-Type Gap Gauge How to Use a Coin-Style Gap Tool When replacing your spark plugs, your choice of gapping tool matters. Like spark plug metallurgy, gapping gauges have been adapted for more focused performance over time.įeeler gauges or coin-style (ramp-style) gauges aren’t as well-suited for precision plugs like iridium because of the risks of damage to the iridium finewire electrode. To avoid this, the gap should only be checked with the right tool. You can use two most common tools to gap. Iridium spark plugs are designed to deliver more than 100,000 miles of reliable ignition and fuel efficiency, but improper gapping can easily damage the sensitive iridium electrodes. Maintaining the correct gap between spark plug electrodes is crucial for the optimal performance of spark plugs. This is especially true for customers who run iridium plugs. Today’s spark plugs are precision-built products, so even the smallest adjustments will change their performance. The Right Tool to Gap Iridium Spark Plugs In either case, engine combustibility will be incorrect. If it’s too big, the coil will need too much voltage to fire. If the gap is too small, the flame kernel will not be able to properly expand. When replacing your customers’ spark plugs, you can help them understand that because gap distances are measured down to the tenth of a millimeter, or four one-thousandths of an inch, it’s crucial to be extra careful when checking or setting the gap in each plug. In a sense, spark plugs are an engine’s heartbeat, critical to optimal engine performance-if they’re gapped properly when they’re installed.Īs you’re aware-but your customers might not be-properly gapped plugs allow the engine to literally fire on all cylinders, while the wrong gap will not create the proper ignition and engine performance, regardless of vehicle.
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