2019 Grom SF NGK CPR7EAIX-9 Iridium Spark Plug Install DIY : Longer Service Life Iridium Plug :)
Channel: Aaron Schwarz
Date: 26/06/2020

Changing OEM spark plug to NGK CPR7EAIX-9 in 2019 Honda Grom SF, testing & it works, DIY how to video! Iridium plugs last much longer than conventional spark plugs due to iridiums resistance to spark erosion or electrical plasma ablation as the high voltage spark forms many millions of times during engine operation. 

*** Caution *** Let Engine Cool Down before Spark Plug Change

Let your engine cool down all the way for several hours or overnight as it needs to be room temperature to change the spark plug & torque it down to 12 lb ft specification. The plug steel alloy & head of Grom aluminum, & they have different coefficients of expansion, so they both must be room temp to change the spark plug without damaging the threads on the engine head. 

Procedure: Get your tools together :) 

~Remove the spark plug wire! 
~Use 5/8" or 16mm spark plug socket wrench to remove factory plug
~Hand tighten in the new NGK CPR7EAIX-9 spark plug 
~Using torque wrench & tool tighten new plug to 12 lb ft of torque. 
~Replace the spark plug wire
~Test start Grom to make sure it works!

Thanks for watching, safe travels & keep the rubber on the road! 

** Captured with 2017 iPhone SE & editing using iMovie on iMac for stunning UHD 4K resolution using a tripod & selfie stick to hold the phone / camera :)