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Home >> Daewoo >> 2000 >> Leganza CDX >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Disc >> Diagnosis >> Power Booster Test

Power Booster Test

  1. With engine off, eliminate vacuum in booster by pumping brake pedal several times. Push pedal down and hold it in this position. Start engine.
  2. Booster is OK if pedal drops further because of extra force produced. If brake pedal does not drop, vacuum system (vacuum hoses, check valve, etc.) is probably defective and should be checked. If no defect is found by checking vacuum system, defect is in booster.
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