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Home >> Peugeot >> 1982 >> 604 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION (Turbo) >> Testing >> Vacuum Check >> EGR Vacuum Circuit
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EGR Vacuum Circuit

  1. Disconnect wire 146 from electrovalve. Connect a jumper wire in place of it on electrovalve. Connect other end of jumper wire to ground.
  2. Start the engine. There should be vacuum at the vacuum converter and electrovalve should be open. Disconnect link-rod from vacuum converter lever.
  3. With engine idling, move converter lever smoothly in direction of acceleration for injection pump lever.
  4. Diaphragm of EGR valve should move smoothly until the EGR valve closes completely. If not, complete the following vacuum checks.
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