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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Poor mpg figures HELP!



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      11-26-2011, 09:55 PM   #1
Markcaughey
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Poor mpg figures HELP!

I recently serviced my e90 320d and my mpg seems to have dropped the car has also started making a strange noise wen u remove your foot from the accelerator like its releasing air from somewhere . Was just wonder if anyone has any idea wat may be causing this . Thanks
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      11-27-2011, 09:50 AM   #2
325jay
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check over everything you have done. u may have left a pipe off somewhere
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      11-27-2011, 10:01 AM   #3
Markcaughey
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Thanks. I have checked everything and the air box was loose but I tightened it and the problem was still ther
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