Ignition System - HEI: Testing: Notes

NOTE: Do not ground distributor tachometer terminal. Before making compression checks, disconnect ignition switch connector at distributor. To remove spark plug wire, twist boot 1/2 turn and pull on boot, not on wire. Do not pierce plug boot.

Ensure that wiring harness is properly attached to connector at side of distributor cap. Spark plug wires must be properly connected at both ends before continuing with test procedures.