1982 Audi 5000 Base, Automatic TransFACTORY OEM SERVICE PROCEDURE

Rest Pressure & Leak Test

  1. After correct warm engine control pressure has been obtained, stop fuel pump and note pressure drop. Valve should be in open position. Minimum pressure after 20 minutes must be as specified. See Fuel Injection Pressure Testing table.Β 
  2. If pressure drops too rapidly, run pump again and close valve. Stop pump and observe pressure. If values are now correct, control pressure regulator is faulty and must be replaced.
  3. If pressure still drops, check all connections, fuel pump check valve, cold start valve, and fuel injectors.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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