With the help of an assistant, no problem — checking the pressure sensor

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PROCEDURE
  1. Disconnect the hose from the pressure sensor and plug the hole with your fingertip.
  2. Have your assistant start the engine and bring it up to medium speed (about 2000 rpm).
  3. Reconnect the hose to the sensor at a constant speed.
  4. Since reduced pressure is again applied to the sensor, the ignition timing adjustment of the control unit should work. At the same position of the gas pedal, the engine rotates much more strongly.
  5. However, if the speed remains constant, this means that the reduced pressure hose is leaking or the pressure sensor is defective. The engine notes this fact with a decrease in power and poor exhaust gas parameters.







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