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1979 Rotary Engines

  1. Disconnect hoses "A" & "B" from valve. Start engine and idle. Check vacuum at port "A". If vacuum is present, place finger over port "A" and check vacuum at port "B".
  2. If vacuum is present, continue holding finger over port "A" and disconnect port "C" making sure there is no vacuum at port "B". See Figure. Stop engine.
  3. Disconnect hose "D" and attach a long vacuum hose. Blow through valve and make sure air does not pass through. If any of above tests fail, replace PCV valve.
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