Are spark plugs supposed to be covered in oil?
Are spark plugs supposed to be covered in oil? First of all, it's not normal. You'll never see oil on vehicle spark plugs or spark plugs in four-stroke engines, like those in lawn mowers and snow blowers. Oil only collects on spark plugs in two-stroke engines, like those in chain saws and leaf blowers. That's due to how oil lubricates different types of engines. What does it mean if spark plugs are covered in oil? Oil leaking into the spark plug wells is an indictor of a fairly serious problem that should be inspected and repaired immediately. It is almost...