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Home >> Mazda >> 1980 >> RX-7 GS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Idle Compensation System >> Testing >> Altitude COMPENSATOR

Altitude COMPENSATOR

  1. Remove air cleaner and disconnect altitude compensator hose from carburetor. Connect tachometer. Start engine and run at specified idle RPM with transmission in neutral or "Park".
  2. With engine idling, cover end of tube with finger and note RPM drop. If idle speed drop is not within specifications shown in table, replace altitude compensator.
High Altitude Compensator Specifications (Idle RPM Drop

Altitude RPM Drop
Under 3280 Ft. 10-100
3280-6560 Ft. 50-200
Over 6560 Ft. More than 100
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