Check for exhaust leaks?

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Xcobra

Xcobra

Diamond Member
Oct 19, 2004
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Anyone have any ideas? I am getting 12-15 MPG mileage on a 99 corolla and I don't know if it could be an exhaust leak or bad injectors. I don't have an engine light on so I would think there would be no code. Ideas?
 
soydios

soydios

Platinum Member
Mar 12, 2006
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an exhaust leak shouldn't damage fuel economy, except if it's throwing off the ECU sensors.
 
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