DLC code P0300 random misfire detected

2012 DODGE RAM
173,563 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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MOUSE357
  • MEMBER
  • 58 POSTS
Had the code previous P0300, changed the plugs it had Autolite AP do not remember the number on them. But the book didn't call for them.
Long story be short we put the proper plugs in the engine. I have an OBD 2 INNOVA 3100 C scanner... Not sure how to detect which cylinder or cylinder are misfiring.
Could someone please help?
Jul 4, 2020 at 10:18 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good evening,

I would start by checking the compression to make sure there is no issues.

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

Also, a common issue is low fuel pressure. You can rent a tester at a parts store.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy
Jul 4, 2020 at 10:31 AM
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