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Vacuum Amplifier

  1. Install "T" fitting between vacuum amplifier and temperature control valve. Connect open side of "T" to vacuum gauge. Run engine at idle. Vacuum gauge should read 2.5-2.8 in. Hg. If not, replace vacuum amplifier.
  2. Install "T" fitting in hose between amplifier and throttle valve housing. Connect open side of "T" to vacuum gauge. Run engine at idle and check for 0.43 in. Hg. If not at 0.43 in. Hg, check throttle valve port for obstructions.
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