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code PO305

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Old Oct 23, 2007 | 06:34 PM
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Default code PO305

2000 Blazer.Does anyone know what causes this code? My wife called me and said that the check engine light was on and the truck was running rough. When I got there the truck was running fine. I checked the codes with a code reader and code PO305 came up(misfire on cylinder 5). I erased the codes and all is fine.
 
Old Oct 23, 2007 | 06:40 PM
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Default RE: code PO305

You may have had a loose plug wire or a gummy plug. Check the wires first.
 
Old Oct 24, 2007 | 12:52 PM
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Default RE: code PO305

P0305 is a missfire on #5 spark plug. Like pointed out above, check the plug and wires to #5 first.
 
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