LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 1987 >> Starion ESI-R >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Component Testing >> THERMO Valve >> Carbureted
April 5, 2026: LEMON Manuals is launched! Read the announcement.

THERMO Valve: Carbureted

  1. Disconnect White-striped vacuum hose from thermo valve. Connect vacuum pump to nipple "A". See Figure . With engine coolant temperature at 50°F (10°C) or less, vacuum should leak when applied. With engine coolant temperature at 77°F (25°C) or more, vacuum should hold when applied.
  2. Disconnect all vacuum hoses from thermo valve. Connect vacuum pump to nipples "B", "C" and "D" one at a time. Plug nipples other than one being tested.
  3. With engine coolant temperature at 104°F (40°C) or less, vacuum should leak when applied. With engine coolant temperature at 176°F (80°C) or more, vacuum should hold when applied.
scientia non olet · About LEMON Manuals