LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 1992 >> Integra GS-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - System/Component Tests) >> Emission Systems & Sub-Systems >> Fuel Evaporation >> 2-Way Valve
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

2-Way Valve

WARNING: This page is about a different car, the 1992 Acura Legend. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove fuel filler cap. See Fig 1 . Remove vapor hose from fuel tank side of 2-way valve, and install "T" fitting. Connect vacuum gauge to "T" fitting and vacuum pump to hose end.
  2. Slowly apply vacuum while observing vacuum gauge. Vacuum should stabilize momentarily between .2 and .6 in. Hg. If vacuum does not stabilize (valve opens) in specified range, replace 2-way valve and retest.
  3. Move vacuum hose from vacuum to pressure fitting side of vacuum pump. Slowly pressurize vapor line while observing gauge. If pressure stabilizes between .4 and 1.4 in. Hg, valve is okay. If pressure does not stabilize in specified range, replace 2-way valve, and retest.
    Fig 1: Identifying Evaporative Emission Control System
    G120091Courtesy of AMERICAN HONDA MOTOR CO., INC.
scientia non olet · About LEMON Manuals