You might need to think about WHY the tips are covered in "black carbon". Usually indicates a rich mixture, even though short trips can make that happen as well.
You might need to think about WHY the tips are covered in "black carbon". Usually indicates a rich mixture, even though short trips can make that happen as well.
I have used barkeepers friend with good results. I now give them a quick wipe whenever I was my car usually every 2 weeks or so and they are perfect. I find it is easier to keep up with the cleaning on a regular basis as once you let it go so far there is a point of no return.