1997 Chevy Lumina cranks but won't start

Tiny
SNOWWHITE52J
  • MEMBER
  • 1997 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 20,000 MILES
My car will not start when I run a test on it it comes up po300 which is multiple misfire but I have checked all I know Do you have any suggestions
Friday, February 29th, 2008 AT 10:21 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Random Misfires P0300 normally indicates vacuum leak 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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Friday, February 29th, 2008 AT 10:54 PM

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