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Home >> Audi >> 1987 >> 5000 CS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> BOSCH Cis-E III System >> Testing >> Fuel Injection System >> Residual Pressure
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Residual Pressure

  1. Connect Pressure Gauge (VW 1318 ) as previously described. See Figure . Open pressure gauge valve. Operate fuel pump for at least 30 seconds.
  2. Shut off fuel pump. Note system pressure. Pressure should be 51 psi (3.6 kg/cm2 ) after 10 minutes and 49 psi (3.4 kg/cm2 ) after 20 minutes.
NOTE: The Residual Pressure Test does not include the cold start valve. To check cold start valve, reattach fuel line. Operate fuel pump. Visually check for leaks.
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