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Re: How to lean out mixture on L tronic? (archive)
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Posted by John Millward on April 04, 2000 at 10:16:05:

In Reply to: How to lean out mixture on L tronic? posted by Thom on April 01, 2000 at 12:31:22:

: My '78 633 is failing emissions because of excessive CO both at idle and cruise. This appears to be an indicator of running too rich. Is there an adjustment on L-tronic which would allow the mixture to be leaned out?

If this is a catalyst equipped car then it can't be done because it is a closed loop control system that should control the air fuel ratio to a fixed value. If the CO is too high then either the control system or the catalyst is bust.

Sorry for the bad news

John Millward



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