![]() Even if the preset gap matches that required by your engine, it is always good practice to physically check the gap as it may have shifted during transportation. Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. Iridium spark plugs are typically the most expensive, ranging from $8 to $15 each. There is a price for this precious metal. What about iridium spark plugs? Iridium spark plugs feature a fine wire center electrode that is designed to conduct electrical energy better and increase firing efficiency. APP5224) comes pre-gapped at 0.044″ and it will work fine on your 2008 Honda Fit 1.5L. The spark plug gap of this Autolite Double Platinum Spark Plug (Part No. Can you gap Autolite double platinum spark plugs? Even with small variations in the factory set gap the ultra-efficient firing power design will compensate for those small variations. In most cases your Iridium Power plugs do not need to be gapped. This is because the wider the spark plug gap, the more voltage is required to arch between the electrodes. As the spark plugs wear, the spark plug gaps widen, also weakening MPG. Why Do Worn Spark Plugs Affect MPG? All spark plugs become less efficient – and less fuel efficient – over time. As this gap increases, more electricity is needed to spark ignition of the air/fuel mixture. ![]() Over time, the gap between the electrodes grows larger. What Causes Spark Plugs To Wear Out? Every time a spark plug creates an arc of electricity, it very minimally shortens the electrodes. All you need to do is slide the spark plug electrode opening into the gap opener and gently move it over to the smallest side of the gapper. The good news is that it’s not just cheap to buy, but also extremely easy to use too. However, if the spark plug gap is too large, the spark is unlikely to consistently “jump” across the long distance between electrodes, thus leading to a rough-running engine or one that doesn’t run at all. One of the key factors that makes a spark plug work well, or not, is the size of the gap between the electrodes. See Also What is the difference between autonomy and authority? What happens if your spark plug gap is too big? Most experienced tuners know that increasing the gap size increases the spark area exposed to the air-fuel mixture, which maximizes burn efficiency. The larger the gap, the more voltage is needed to jump the gap. Do you gap platinum spark plugs?ĭo not change the gap on platinum, iridium or twin tip spark plugs, as the fine electrodes may get damaged. Factors such as the type of ignition you run, cylinder heads, fuel and even timing can affect how much gap will work best for you. Most engine builders seem to settle around 0.035 of an inch. How long do Autolite platinum plugs last?ĭo Autolite spark plugs come gapped? – Related Questions What is the proper spark plug gap?įor most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch. ![]()
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