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Internet Message Format  |  1992-10-09  |  647 b 
  1. Path: sparky!uunet!snorkelwacker.mit.edu!ai-lab!tang!pwu
  2. From: pwu@tang.ai.mit.edu (Peng Wu)
  3. Newsgroups: rec.autos.tech
  4. Subject: Re: What is the air pump used for?
  5. Message-ID: <29053@life.ai.mit.edu>
  6. Date: 9 Oct 92 15:26:44 GMT
  7. References: <28957@life.ai.mit.edu> <BvtF98.K0K@mail.boi.hp.com>
  8. Sender: news@ai.mit.edu
  9. Lines: 6
  10. In-reply-to: wesf@boi.hp.com's message of 8 Oct 92 18:27:08 GMT
  11.  
  12.  
  13.      Running an engine lean will increase the CO level, running the engine
  14.      rich will increase the Hydrocarbon level.
  15.  
  16. I can understand why running rich increases HC.  Can someone explain why
  17. running lean increases CO?  It is counter-intuitive to me.
  18.