This DENSO Parts Professional how-to video will show you the basics of how to change DENSO spark plugs.
For spark plugs in difficult areas it will be necessary to use several different lengths of extensions, for example 1", 3", 6", 12" and 24" 3/8" drive extensions. Also a 3/8" swivel may be required. In some extreme cases, the intake manifold or other engine components may have to be removed to gain access to the spark plugs. Check your factory or aftermarket service and repair manual for exact instructions for the vehicle you are working on.
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camer0nxy 4 weeks ago