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Old Sep 20th, 2018, 22:51   #11
Stephen Edwin
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Last Online: Oct 26th, 2023 20:42
Join Date: Jun 2010
Location: Thurrock
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Quote:
Originally Posted by Zebster View Post
It's running lean. Could be a dirty MAF sensor?

The stoichiometric air:fuel ratio is 14.7:1 (by weight). By measuring the unburnt fuel and free oxygen your car's ratio can be determined, then compared to the stoichiometric ratio to give the lambda figure. In your case the air:fuel ratio is 1.04 x 14.7:1, so 15.288:1
The calculation is interesting to know.

Thanks for that.
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