Gas coming out of exhaust pipe?

Tiny
BIZBZ
  • MEMBER
  • 1993 CHEVROLET BLAZER
Engine Mechanical problem
1993 Chevy Blazer 6 cyl Four Wheel Drive Automatic

What does it mean when gas comes out your muffler?
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Friday, December 4th, 2009 AT 7:22 PM

5 Replies

Tiny
SWILLIAMS
  • MEMBER
If you smell a lot of fuel out the tail pipe it usually means the injector or fuel line inside the intake manifold plenum is leaking. It also means that the converter and O2 sensors will probably need replacing due to the raw fuel. Sometimes you get lucky though.

Not a real hard fix but the parts are not cheap. If it's the pressure regulator or the lines the parts are about 50.00 If it is the injector itself you will need closer to 400.00
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Friday, December 4th, 2009 AT 9:25 PM
Tiny
BIZBZ
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Where the fuel pressure regulator is at on a 93 blazer or a 4.3 vortec
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Saturday, December 5th, 2009 AT 1:33 PM
Tiny
BIZBZ
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Ok thank you. One more question, were is the fuel pressure regulater located at on it?
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Saturday, December 5th, 2009 AT 1:50 PM
Tiny
SWILLIAMS
  • MEMBER
It's attached to the back side of the injector unit itself under the intake plenum. I usually just plan on replacing the entire unit and the fuel lines as well. About 350 bucks for a kit that includes all the parts.
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Saturday, December 5th, 2009 AT 9:24 PM
Tiny
BIZBZ
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Thank u an u been a really really big help I really do appreciate the help u have helped me out a lot so I will try that an let u know how it goes thank u again.
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Sunday, December 6th, 2009 AT 9:09 AM

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