2003 Chevy Cavalier cylinder 4 missfires

2003 CHEVROLET CAVALIER
30,579 MILES • 4 CYL • FWD • AUTOMATIC
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JWELTONBUG
  • MEMBER
  • 1 POST
Do I need to replace my fuel pump or the pressure regulator when the engine light is on and "cylinder 4 missfires" shows up on my diagnostic. What exactly is wrong?
Oct 16, 2009 at 7:32 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the sparkplug, compression and injector for cylinder no. 4
Oct 17, 2009 at 12:25 AM
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