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Posted on Jul 03, 2012
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2001 blazer rich

2001 Blazer, 4.3L V6. 76,000 miles. Engine exhaust smells rich. I've replaced the O2 sensors & fuel filter but problem persists. What's the next likely source? Leaking fuel pressure regulator, injectors, or other? I just want to eliminate the constant eye watering and rich odor. thanks

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  • Anonymous May 18, 2013

    if it was me i would check the canister were you put gas in that is suppose to prevent gas odor and i wouldnt fill the gas to the top i would drive it half full

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1 Answer

mike hayward

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  • Chevrolet Expert 279 Answers
  • Posted on Jul 03, 2012
mike hayward
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Joined: Dec 01, 2009
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Check the engine breather pipes. if one of these is split this will cause a headache inducing smell while driving

if this helps let me know

cheers
mike

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Dec 18, 2008

SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

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Anonymous

  • 116 Answers
  • Posted on Apr 11, 2009

SOURCE: 1999 chevy blazer wont start

THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Anonymous

  • 98 Answers
  • Posted on Apr 22, 2009

SOURCE: 95 S10 blazer won't start

check the EGR valve. it might be dirty in side with carbon. DONT GRINE OFF GASKET SCRAP IT OFF.

Anonymous

  • 6982 Answers
  • Posted on Jul 30, 2009

SOURCE: fuel pressure regulator

Two places to look...if you have separate injectors for each cylinder then regulator should be at the front end of the fuel rail. If you have throttle body injection it is on the throttle body itself.

Anonymous

  • 541 Answers
  • Posted on Oct 23, 2009

SOURCE: My 4.3 vortec engine in my s10 blazer won't start

try the ignition module. if it is bad it does not send the signal for the the throttle body injectors to spray feul.

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East Coast Canada Rocks!!!
:)
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