Jun 10, 2012 · An HEI is pretty self-contained. If it's got power and the car cranks, proving both battery power and ground, and it still has no spark, it's either the coil, pickup or module.

In this video, I show you exactly how to test a 4-pin HEI ignition module — both on the bench and while it’s still installed in the car.

Jun 23, 2025 · Replacing an HEI module without proper testing can lead to wasted money and continued frustration. This guide provides a comprehensive approach to testing your HEI ignition …

Dec 11, 2017 · If, for some reason you have no spark coming from your distributor, the following will help you check and test the installation, connections, and components, of the unit so that you can get …

Apr 7, 2020 · To confirm the expansion of the dwell, simply connect the green lead of an old tach/dwell meter to the TACH terminal on the HEI distributor cap. Start the engine and take a dwell reading at …

Jan 25, 2018 · Here is a Pontiac HEI distributor diagnostic chart. Should help to isolate some of the "no start" or "poor running" conditions which are sometimes missed as an HEI problem as we look to fuel …

Jan 26, 2021 · According to Performance Distributors, if you are experiencing a no-spark problem with your HEI distributor, you can use the following information to help check and test the installation, …

In this article, I will guide you through the steps to bench test a distributor, troubleshoot common distributor problems, and provide tips for maintaining your distributor to ensure it continues to …

We are checking the distributor's path to ground. We'll use an ohmmeter on the distributor housing to a bare spot on the engine. The reading should be near 0 ohms for optimal performance.

Apr 2, 2025 · A malfunctioning HEI distributor can lead to significant engine problems, including misfires, poor performance, and difficulty starting. This guide provides a step-by-step process to help you …