FAQ
Are you supposed to Gap Iridium spark plugs? In most cases your Iridium Power plugs do not need to be gapped. Even with small variations in the factory set gap the ultra-efficient firing power design will compensate for those small variations. Do NGK Iridium plugs come pre-gapped? Anyway, they come pre-gapped from the factory,so do…
What is the best way to gap spark plugs? Do Bosch platinum spark plugs need to be gapped? Bosch Spark Plugs are pre-gapped at the factory. In most cases, that gap is indicated on the package. If the gap is adjustable and different from the gap specified by the engine manufacturer, it needs to be…
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What gap should my spark plugs be? For most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch. Most engine builders seem to settle around 0.035 of an inch. Factors such as the type of ignition you run, cylinder heads, fuel and even timing can affect how…
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