Spark Plug Quickie
Posted by Mad Scientist on November 30, 2007
Spark plugs are the first step in making power, and knowing how to read them is essential to keeping a well-maintained machine. Think of your spark plugs as your window into your engine, they can tell you exactly what’s happening in there if you know what to look for. Dansmc has a great article here on reading motorcycle spark plugs, but the same guidelines apply to any 4cylinder motor. Tuner-junction has a similar writeup here that is just as useful.
