2001 Chevy Blazer CODE P0300

2001 CHEVROLET BLAZER
126,585 MILES • 6 CYL • 2WD • AUTOMATIC
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KUNGFU
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  • 2 POSTS
RANDOM/MULTIPLE CYCLINDER MISFIRE
Dec 29, 2008 at 4:08 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Normally caused by vacuum leaks and bad fuel

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Dec 29, 2008 at 4:21 PM
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