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Code P0304 02 4 misfire

Tiny
LYDIA WILLIAMS
  • MEMBER
  • 2013 FORD EDGE
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 23,500 MILES
Replace all plugs and coils and fuel injector car still has 4 misfire.
Friday, February 7th, 2020 AT 8:04 AM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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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Friday, February 7th, 2020 AT 8:49 AM
Tiny
BMDOUBLE
  • MECHANIC
  • 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.
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Friday, February 7th, 2020 AT 10:41 AM

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