seems to be running rich?

1997 TOYOTA 4RUNNER
160,000 MILES • 6 CYL • 4WD • MANUAL
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MADMARIO
  • MEMBER
  • 5 POSTS
Had a check engine code, misfire on cylinder 4. had new wires and a recent tune up. I firgured it was the fuel injector. replaced it with a remaned injector. it fixed the problem. but seems to be running rich now. after driving it 15 milies or so the check engine light pops on when idling. would apreciate any info you have for me thank you.
Dec 16, 2007 at 1:43 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Lets get the brain scanned for code/s and comeback with it so that we can start the diagnosis
Dec 17, 2007 at 1:39 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,684 POSTS
It sounds like you have an exhaust leak which allows air into the system so the computer adds fuel or one of the fuel linwecjotrs is leaking, please go over this guide which tells the causes for a rich mixture and how to fix it.

https://www.2carpros.com/articles/why-an-automotive-engine-will-run-rich


Please go over this guide and get back to us.
Nov 22, 2024 at 8:10 AM
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