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Re: Bad gas mileage after tune up on 85 535i (archive)
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Posted by John on January 07, 2001 at 09:14:28:

In Reply to: Bad gas mileage after tune up on 85 535i posted by poe on January 07, 2001 at 04:42:49:

Check CO adjustment on the AFM. It appears to be way too rich. Provided everything else is OK, leaning it out will give you back your MPG. Too rich may cause a backfire on startup.
85 535i w 190k bought new in 85.


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