1987 GMC Suburban Sulfur Smell

Tiny
RSTESENY
  • MEMBER
  • 1987 GMC SUBURBAN
Smells problem
1987 GMC Suburban V8 All Wheel Drive Automatic

What is making the sulfur smell?
Monday, May 4th, 2009 AT 10:24 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Rich fuel condition

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Monday, May 4th, 2009 AT 10:51 PM

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