1998 Chevy Monte Carlo won't start cylinder misfires

Tiny
JEBBERTOYA
  • MEMBER
  • 1998 CHEVROLET MONTE CARLO
Engine Mechanical problem
1998 Chevy Monte Carlo 6 cyl Two Wheel Drive Automatic

code po305 which is #5 cylinder misfires is the only code coming up car made funky noise then stalled out won't start? Cause? Sensor? Checked coil pack has spark checked wire has spark.
Saturday, March 14th, 2009 AT 3:13 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Misfire at #5 should prompt you to check the sparkplug /compression/injector.

Engine misfiring 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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Sunday, March 15th, 2009 AT 4:57 AM

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