Tune-ups

  • Do you have a bad spark plug?

    car in shop

    Spark plugs have been around since the beginning, and play as important a role now as they did a hundred years ago. It’s a good idea to replace them as a set at regular intervals, but sometimes one will go bad sooner than the rest for one reason or another. How do you know if you have a bad spark plug? Here are some indicators, from HMI Auto Care in Hackettstown, NJ.