Vacuum Regulator

Procedure


1. Disconnect vacuum line from distributor port and connect a vacuum gauge.

2. With engine at idle, the vacuum gauge reading should be within 1 inch Hg. vacuum of the calibration point. The calibration point of each valve can be identified according to color code as follows: Black, 6 inches Hg.; green, 7 inches Hg.; red, 8 inches Hg.

3. Replace valve if not within specifications.