Toolhorder
Well-known member
These were also gapped, but for the sake of checking and demonstrating i added that bit. It never hurts to check.![]()
That's good advice. Honda uses NGK or Denso plugs and they come pre gapped as well and have a cardboard or plastic tube over the electrode to protect it until it's opened and out of the box. Once I was changing plugs on a 90K service and when I started the engine I had a dead miss on one cylinder where I had none before. An older tech told me to check the plug gap and sure enough it was smashed into the plug. I gapped it and was back in business.
Even when they are pre gapped I usually inspect them or at least eyeball them to make sure they are close.


