Not all spark plugs are created equal, and knowing which one your car needs can vastly improve your car's fuel economy.

Q: My 2002 Buick LeSabre has 98,887 miles on it. Its ignition control module is failing. Since November 2014 I have replaced it three times. Can you please tell why my control module keeps failing? It ...

Whether you service your own ignition or need more troubleshooting savvy for road rallies and cruising, this month's lesson focuses on spark and ignition system basics. Understanding ignition ...

Editor's Note: Way back in March of 1998, GMHTP ran "Opti-Spark" by Ray Bohacz, an engineering-level dissection of GM's Opti-Spark distributor. This evolutionary ignition component was a bridge ...