Stop in for a cup of coffee
Learning more about reading spark plugs today. Color, burn line on the ground strap, and the fuel (AFR) burn line on the porcelain. Can learn a bunch about how the engine is running. So, I cut some plugs here at work to see what I can learn. These are a bit rich, ground strap doesn't have a nice burn line visible (line should be burnt all the way to the weld point just above the threads and the fuel line on the radious of the porcelain is a bit dark, should be a bit lighter, but overall in good shape.
Learning more about reading spark plugs today. Color, burn line on the ground strap, and the fuel (AFR) burn line on the porcelain. Can learn a bunch about how the engine is running. So, I cut some plugs here at work to see what I can learn. These are a bit rich, ground strap doesn't have a nice burn line visible (line should be burnt all the way to the weld point just above the threads and the fuel line on the radious of the porcelain is a bit dark, should be a bit lighter, but overall in good shape.