Question about 2003 Ford Focus
Could this of been caused by the air filter box and cover not being installed correctly or is thee noise still there after you installed it back,? if its still there then something is wrong the poping noise is a small back fire threw the intake, may be a bad coil or crossed sparkplug wire,i would have this checked asap.
Posted on Aug 29, 2010
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Posted on Jan 02, 2017
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