They look pretty good. You want a light brown or tan color on the side of the electrode. I’d personally just replace them since they’re out. You don’t just replace them for good combustion but also to prevent them from becoming too brittle and things like that. Probably won’t improve mpg much at all but won’t hurt.
They look pretty good. You want a light brown or tan color on the side of the electrode. I’d personally just replace them since they’re out. You don’t just replace them for good combustion but also to prevent them from becoming too brittle and things like that. Probably won’t improve mpg much at all but won’t hurt.