If you suspect a faulty ignition coil, you’ll first need to test it. “Testing ignition coils is a straightforward and fairly easy DIY,” says Aaron Turpen, an automotive expert at Car Talk.

MSD has a whole series of Blaster 2 and 3 cannister-type ignition coils that can replace stock coils used in various OE ignition systems. They're also a good complement for MSD 6-series ignitions.

We make sure our ignition is getting power to our cylinders properly by installing a new distributor and external coil from MSD Ignition.

The new, state-of-the-art, fully programmable digital multi-coil ignition system from MSD enables consistency with elimination of the distributor and much more. - Super Chevy Magazine ...

An MSD type distributor. Just like the coil, the basics of its workings will suffice for the discussion. Hank O’Hop What Is Electronic Ignition?

Spark plugs have a pretty predictable life cycle, but ignition coils can be harder to track. Here's how to tell if an ignition coil is on its way out.