I bought the replacement spark plugs for my 2001 tacoma pre runner. These spark plugs have 2 electrodes and I was wondering how to calibrate them. I read that the gauge has to measure .043 but I want to know how to measure it. Is it vertically in this case since I have 2 electrodes?
When you have one electrode you measure the gauge horizontally because the electrode sits on top, but in this case the electrodes are kind of in the side so I am wondering/