Miss fire code

2003 NISSAN MAXIMA
200,000 MILES • 3.5L • V6 • 2WD • MANUAL
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DILL-11
  • MEMBER
  • 126 POSTS
All new plugs and coil packs, still have a miss fire code. Can the catalytic converter be stopped up/ or could the timing chain have jump a notch? Or bad ECM? Please help!
Dec 30, 2017 at 10:47 AM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
you should be doing a compression test first, if that is okay, check for vacuum leaks and make sure fuel pressure and injectors are okay. identifies the code for a specific cylinder or a random code?
Dec 30, 2017 at 2:46 PM
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