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Home >> Mazda >> 1990 >> B2600i Base, 2D Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - CARBURETED >> Emission Systems & Sub-Systems >> Dashpot Test
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Dashpot Test

  1. Quickly move throttle lever. Verify dashpot rod comes out quickly to its full stroke accompanying movement of throttle lever. See Figure . Release throttle lever and verify lever returns slowly to idle position after contacting dashpot rod.
  2. If dashpot requires adjustment, warm engine and run at idle. Connect a tachometer. Slowly increase engine speed. Verify throttle lever separates from dashpot rod at 2700-2900 RPM. To adjust, loosen dashpot lock nut and turn dashpot. Tighten lock nut.
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