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Home >> Mercury >> 1972 >> Capri 2.0L Eng VIN X, Not Available Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Transmission Regulated Spark - CAPRI (2000 & 2600) >> Service Procedures >> System Testing

System Testing

Connect vacuum gauge to TRS system between modulator valve and distributor. Make sure that temperature switch is above 65°F, and proceed as follows:

  1. Start engine in neutral or park. No vacuum should be indicated on the gauge. Increase engine speed to 1000-1500 RPM. Vacuum should remain at zero.
  2. Push clutch pedal to the floor and place transmission in high gear. With engine running at 1000-1500 RPM, vacuum reading should be at least 6" Hg.
  3. The foregoing tests are for detecting trouble in the vacuum circuits. Should the system fail to function according to the System Test, it is necessary to check the individual components.
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