This manual covers the maintenance and repair procedures for the GM HEI ignition system. The document provides detailed steps and instructions on how to properly perform the maintenance and repair procedures.
This document provides step-by-step instructions for using the Actron CP7827 compression tester. It covers necessary safety precautions, such as warming up the engine and disabling ignition circuits, before connecting the gauge to spark plug wells.
The guide explains how to perform the compression test on each cylinder and interpret the results based on needle movement and pressure values. It also includes troubleshooting tips for identifying issues like worn valves or head gasket failures. This manual is written in French.
Run the engine for approximately 10 minutes or until it reaches normal operating temperature.
Loosen all spark plugs about one turn, but do not remove them yet.
The pressure value must not vary by more than 10% between cylinders.