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 ...

Accel's single-point "blueprint" distributor is physically similar in appearance and layout to the traditional GM small-cap points-type distributor. The greater the points' closure time (dwell), the ...

A fundamental difference between gasoline and diesel engines is that a gasoline engine uses spark ignition while a diesel engine uses compression ignition. Before we delve deeper, let's understand how ...

The Hemi engine from Chrysler (now Stellantis) is one of the most legendary. Here's why it switched from eight to 16 spark ...

It doesn't matter how stellar an engine you build—if the spark isn't there to light off the air/fuel mixture, you've just built yourself a giant paperweight. Yes, there are lots of aftermarket ...

Corvettes have had electronic ignition systems for over 40 years, starting with the powerful, dependable Delco HEI (high energy ignition) system in 1975 models. Prior to that, nearly all Corvettes, ...