Code p0304 02 4 misfire

2013 FORD EDGE
23,500 MILES • 3.5L • 6 CYL • 4WD • AUTOMATIC
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LYDIA WILLIAMS
  • MEMBER
  • 1 POST
Replace all plugs and coils and fuel injector car still has 4 misfire.
Feb 7, 2020 at 8:04 AM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning,

Did you check the fuel pressure?

Did you check the compression in number 4?

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy
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Feb 7, 2020 at 8:49 AM
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BMDOUBLE
  • CAR REPAIR CONTRIBUTOR
  • 1,139 POSTS
These cars along with the Ford Flex have a common issue with the power-train control module (PCM). The PCM's coil drivers go bad and will sometimes melt the coil because the driver will stay stuck on. This is a possibility, but the basic tests noted above should be done first.
Feb 7, 2020 at 10:41 AM