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Home >> Mazda >> 1980 >> B2000 Base >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Crankcase Ventilation Systems >> Testing >> Rotary Engines

Rotary Engines

  1. Disconnect hoses "A" & "B" from valve. Start engine and idle. Check vacuum at port "A", if vacuum present, place finger over port "A" and check vacuum at port "B", if vacuum present, continue holding finger over port "A" and disconnect port "C" making sure there is no vacuum at port "B".
  2. Stop engine. Disconnect hose "D" and attach suitable length of hose. Blow through valve and make sure air does not pass through. If any of above tests fail, replace valve.
Fig 1: Crankcase Ventilation and Check Valve for Rotary Engine (RX-7)
G09310548Courtesy of MAZDA MOTORS CORP.
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