P0304 2003 kia optima

2003 KIA OPTIMA
126,000 MILES • 4 CYL • FWD • AUTOMATIC
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JDKBANKS23
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  • 1 POST
what is cyclinder 4 misfire
Aug 19, 2011 at 9:27 PM
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MHPAUTOS
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  • 31,937 POSTS
  • ASE Certified Mechanic
This is possibly a faulty spark plug, lead or injector, a low compression can also set this code, the problem is only associated with cyl No 4.
Aug 23, 2011 at 8:05 AM
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RASMATAZ
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  • 75,992 POSTS
  • ASE Certified Mechanic
Check sparkplig, compression and injector for no.4
Aug 23, 2011 at 8:06 AM
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