2002 Saturn SC2 Miss firing

Tiny
WISKO17
  • MEMBER
  • 2002 SATURN SC2
  • 4 CYL
  • FWD
  • MANUAL
  • 110,000 MILES
At first I had some problems with the car not running on all cylinders. Then I tried to replace the plugs and wires. But when I did the car started miss firing more than it have before. I checked the firing order and it seemed to be right. So would my next step would be to change the Ignition coil?
Saturday, December 27th, 2008 AT 3:42 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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Saturday, December 27th, 2008 AT 3:46 AM

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