2001 Chevy Blazer CODE P0300

Tiny
KUNGFU
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 126,585 MILES
RANDOM/MULTIPLE CYCLINDER MISFIRE
Monday, December 29th, 2008 AT 4:08 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Monday, December 29th, 2008 AT 4:21 PM

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