- Re: Citroen Saxo 1.4 multi point IAW IAP.81 T Reg Archived Message
Posted by Michael Whitworth
on October 7, 2008, 7:45 am, in reply to "Re: Citroen Saxo 1.4 multi point IAW IAP.81 T Reg"
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Hi Lee, >>>>or am i now speaking even more rubbish<<<< That kind of comment is what actually prevents further understanding, Yourself, Dave and Gwyn all make valid points in the complex events of combustion on a closed loop system, espicially if things are not quite going as planned. But again IMHO (and experience)CO is a product of combustion, so anything that reduces combustion will reduce CO. A good cat and the closed loop system can distort this fact(theory)  . How many times have you seen a car with a slight misfire, even a car with cam timing out but the tailpipe emissions have been almost perfect and well within MOT spec. Going back to Petes origial 4 gas readings, these readings are too good to be anything other than a cat fault especially if the car drives well and lambda/ecu are in closed loop. Also in my experience most failed cats will produce a slightly high lambda reading on a gas analyser. Mike 
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