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i have a slight misfire on my 320i and a bad overfuelling fault, i have done a compression test and all 6 cylinders are reading 170 psi so it looks like the engine is ok, also i have changed the airflow meter, the dizzy cap and rotor, and the spark plugs. on idle i get a misfire but as i accelerate it gets less but it constantly overfuels it is giving a reading of 9 on the c0 machine in the garage has anybody any ideas what it could be thanks. :frown