If you have any questions, please contact the NGK Spark Plugs Tech Staff > However, when you add a high power ignition system (such as those offered by MSD, Crane, Nology) you can open the gap from. As an example, when you raise compression or add forced induction (a turbo system, nitrous or supercharger kit) you must reduce the gap (about. The gap should be adjusted by only moving the ground electrode.Īnother consideration that should be taken into account is the extent of any modifications that you may have made to the engine. If adjusting the gap on fine wire or precious metal plugs such as platinum or iridium, be very careful not to apply any pressure or prying force to the fine wire center electrode or insulator as they can be damaged. It is always best to check the gap against the manufacturer’s specifications. The incorrect plug gap for your engine can contribute to a high rate of misfires, loss of power, plug fouling, poor fuel economy and accelerated plug wear. Although the NGK factory will set the gap to a preselected setting, this may not be the right gap for your particular engine. A spark plug part number might fit hundreds of different engines from many different manufacturers. It does not store any personal data.DO I NEED TO SET THE “GAP” WHEN INSTALLING A NEW SET OF PLUGS? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. The exception are for example spark plug part numbers with gap that does not need to be adjusted and can not be changed, such as Brisk Premium Multi-spark plugs, Brisk Premium LGS Spark Plugs, Brisk Premium LGS-T spark plugs, Brisk Extra Turbo Spark Plugs and some others. Which spark plug part numbers can’t be adjusted? Used spark plugs are hard to fire as the gaps are worn out, and insulation properties of the ceramic is compromised by solid combustion deposits and old fuel saturation. It is not uncommon to gain as much as 20 Hp just by replacing used spark plugs. How much HP can you get from replacing spark plugs? Due to the different tip design, the gap of the spark plug has also changed. The new spark plug has an Iridium tip instead of the current Platinum tip. A new spark plug has been released for use in the above vehicles.
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