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Running rich

Tiny
JKLANTELME
  • MEMBER
  • 2013 JEEP WRANGLER
  • 3.6L
  • V6
  • 4WD
  • AUTOMATIC
  • 67,000 MILES
It brought up the code for a cylinder misfire. I changed the ignition coil and all six spark plugs. Is running fine but I’m still getting a rich smell and some smoke from the exhaust. There was still a little oil around the manifold, will it take some time for it to burn off and the smell will leave or do I need to focus on another area?
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Saturday, December 7th, 2019 AT 5:04 AM

1 Reply

Tiny
AL514
  • MECHANIC
  • 4,669 POSTS
Hello,

It sounds like you may have a fuel injector that's leaking, causing a rich condition. You can try unplugging each injector one at a time and see if it alleviates the problem. The engine will run a little rough while doing this but it will help find out if it's actually an injector staying open. You should also have the ECM scanned for diagnostic codes.

https://www.2carpros.com/articles/excessive-smoke-coming-from-the-exhaust-pipe
https://www.2carpros.com/articles/engine-black-smoke
https://www.2carpros.com/articles/how-to-test-a-fuel-injector
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Saturday, December 7th, 2019 AT 10:05 AM

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