2000 Ford Focus odb2 code 303

2000 FORD FOCUS
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MARK G.
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2000 Ford Focus 4 cyl Two Wheel Drive 153000 miles

what causes cylinder 3 to misfire,plugs and wires have been changed.
Oct 14, 2010 at 6:07 PM
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RASMATAZ
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P0303: Check the compression and injector for the no.3
Oct 14, 2010 at 9:54 PM