![]() The incorrect spark plug gaps can cause uneven firing of individual spark plugs and delay engine combustion both of which can cause an engine to miss or idle erratically. 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 plugs that are gapped incorrectly can cause an engine to miss, or run erratically, especially during idle. 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. 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. 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. 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 spark plug gap adjustment should not be changed more than 3 times and should not exceed. The Right Tool to Gap Iridium Spark Plugs In either case, engine combustibility will be incorrect. If done correctly, a larger gap (and generally, wider spark plugs) will result in a faster engine. 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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