Hey all, just changed my 2017 Prius' plugs today, with 108k on them. How do they look? I feel like the ceramic and electrodes look well worn, but the oily threads seem strange. I thought leaking valve cover gasket but, when I looked down the wells, they were dry as a bone.
Maximum Electrode Gap for Used Spark Plug 1.1 mm (0.0433 in.) Note Never attempt to adjust the electrode gap of a used spark plug. If the electrode gap is more than the maximum, replace the spark plug. Standard Electrode Gap for New Spark Plug 0.8 to 0.9 mm (0.0315 to 0.0354 in.) Spark Plug by MAX2 posted Feb 17, 2025 at 11:28 AM
