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Computer says fuel rich very rich?

Tiny
CALLIGETTER
  • MEMBER
  • 1995 CHEVROLET BLAZER
Engine problem
1995 Chevy Blazer V6 Four Wheel Drive Automatic 140000 miles

runs bad computer says fuel rich very rich smell f/ exhaust w/ black smoke
Thursday, December 6th, 2007 AT 8:27 PM

2 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Can you tell me the code? Or is it a bank sensor code or MAF sensor code?
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Thursday, December 6th, 2007 AT 8:47 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,397 POSTS
This can happen when the fuel injector gets stuck or the fuel pressure regulator goes bad and allows raw fuel into the intake manifold, here is the location of the regulator so you can check it out and I have included this guide to help explain the black smoke as well.

https://www.2carpros.com/articles/engine-black-smoke

I would replace the spider injector because they and problem with those as well. The fuel pressure regulator is where the fuel injector assembly is located.
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Monday, July 8th, 2024 AT 2:54 PM

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