[wootty]

backbox is a bit sootty and only getting about 19-20 mpg around town driving,should be better than this as the engines a reasonable low miler for year.
everything runs fine,starts 1st time,idles fine,excelleration etc but uses the fuel.
have changed mafs over but still the same.any ideas,poss o2 sensor??

 

[Slacker-ray]

backbox is a bit sootty and only getting about 19-20 mpg around town driving,should be better than this as the engines a reasonable low miler for year.
everything runs fine,starts 1st time,idles fine,excelleration etc but uses the fuel.
have changed mafs over but still the same.any ideas,poss o2 sensor??

have you had the emisions analysed..............the readings that you'll get will help to identify the problem, if any.

Also, have you checked for any error codes?

 

[Ronnie]

If the lambda sensor is the original one then it most likely that, they will lose efficiency over the years without flagging a fault code up

 

[wootty]

i havent had any codes read as of yet.im waiting for the weather to improve???? so can get it up in the air 2 check.