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1989 Jeep Wrangler strong fuel smell, dumping fuel back int

Tiny
CRAZYJOE56
  • MEMBER
  • 1989 JEEP WRANGLER
  • 4 CYL
  • 4WD
  • MANUAL
  • 149,800 MILES
I have replaced all sensors, nothing clogged, everthing replaced to include fuel regulator. You step on the gas and black smoke out the back. What else can it be?
Kip
Saturday, November 21st, 2009 AT 4:54 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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Saturday, November 21st, 2009 AT 11:12 PM

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