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HOMESERVICE MANUALSHYUNDAI1994EXCEL BASE, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSEMISSION SYSTEMS & SUB-SYSTEMSFUEL EVAPORATIONSYSTEM TEST
1994 Hyundai Excel Base, Standard

System Test

1994 Hyundai Excel Base, StandardSECTION System Test
  1. Disconnect Red-striped vacuum hose between throttle body and purge control solenoid valve at throttle body. Connect a hand-held vacuum pump to disconnected vacuum hose. Plug nipple on throttle body where vacuum hose was removed.
  2. With engine at idle and engine coolant temperature at 140°F (60°C) or less on 4-cylinder or 104°F (40°C) or less on V6, apply 7.3 in. Hg vacuum. Vacuum should hold. Raise engine speed to 3000 RPM, and again apply 7.3 in. Hg vacuum. Vacuum should hold.
  3. With engine at idle and coolant temperature at 158°F (70°C) or more on 4-cylinder or 176°F (80°C) or more on V6, apply 7.3 in. Hg vacuum. Vacuum should hold. Turn engine off. Start engine, and apply vacuum, within 3 minutes of starting engine. Vacuum should bleed down.
  4. With engine running for more than 3 minutes after starting, raise engine speed to 3000 RPM and apply 7.3 in. Hg. Vacuum should hold momentarily and then bleed down.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.