Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> MG >> 1979 >> Midget >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emissions System - Air Injection System >> Testing >> Gulp Valve >> MGB

Gulp Valve: MGB

Download the full database via torrent (~1.1 TB)  |  Download Brad's custom LEMON patches
  1. Disconnect air supply hose to gulp valve at the air pump. Connect a vacuum gauge, using a "T" fitting, to the disconnected end of hose. Start and idle engine.
  2. Temporarily block off open end of "T" fitting and check that vacuum gauge reads zero for approximately 15 seconds. If vacuum is registered, replace gulp valve.
  3. With open end of "T" fitting still blocked off, quickly open, then close throttle. Vacuum gauge should indicate vacuum. Repeat this several times, unblocking "T" fitting after each time to allow vacuum to escape. If gauge fails to register vacuum, replace gulp valve.
scientia non olet · About Brad's Car Manuals