If there is a standard in the world for a stand-alone electronic ignition distributor for GM engines, it has to be the High Energy Ignition or HEI distributor. This large cap distributor first ...

Replacing the distributor cap on my 99' Acura Integra due to misfires in cylinders 3 and 4. Engine was running rough on start up before hand, and the check engine light came on with codes 303 and 304, ...

It wasn't all that long ago that GM engineers designed the original HEI system to replace the decades old points-type ignitions. In the mid-'70s, leaner mixtures demanded greater voltage and more ...

If you've ever leaned over the fender of an old Chevy, timing light (one of the automotive diagnostic tools to add to your DIY collection) in one hand and a long extension on a ratchet wrench in the ...

The ignition (or distributor) cap is where ignition wires that run to the spark plugs receive high-voltage current from the ignition coil. Metal contacts in the cap connect with contacts in the ...

If you're a follower of the "How It Works" series, you've been learning the principles of what makes a car run. You've boned up on the four-stroke cycle, valvetrains, cooling, lubrication, and ...