Kerry Posted January 19, 2015 Posted January 19, 2015 I purchased some de so iridium power 0.4mm spark plugs from opieoils at the weekend but does anyone know if they need gapping and what should the gapping be so I can check they are correct Quote
Jud1 Posted January 19, 2015 Posted January 19, 2015 http://densoiridium.com/installationguide.php "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" (according to the US guys quoting the Manual, it should be 0.043" or 1.1mm) Quote
Tricky-Ricky Posted January 19, 2015 Posted January 19, 2015 If they are the correct part number for the engine then they will be gaped correctly. Iridium plugs can be re-gaped but unless you know how I wouldn't advise it. Quote
a2orry Posted January 19, 2015 Posted January 19, 2015 Are you sure 0.4mm that is a tight gap . Quote
Jud1 Posted January 19, 2015 Posted January 19, 2015 Are you sure 0.4mm that is a tight gap . should be 0.043" or 1.1mm Quote
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