kia optima help

2001 KIA OPTIMA
4 CYL • FWD • AUTOMATIC
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EOWEN1
  • MEMBER
  • 2 POSTS
PO 300 Random Multiple cylinder misfire. What causes this?
Feb 23, 2011 at 11:51 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Misfiring can be due to faulty spark plugs and/or related components, low fuel pressure, low engine compression and bad fuel.

When was a tune-up last performed?
Feb 23, 2011 at 12:48 PM
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EOWEN1
  • MEMBER
  • 2 POSTS
thanks....we'll change the spark plugs and go there from there
Feb 23, 2011 at 2:06 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
You're welcome.

Good luck and have a nice day.

Feb 24, 2011 at 4:47 AM
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