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
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Saturday, November 21st, 2009 AT 4:54 PM

1 Reply

Tiny
2CEXPT
  • MEMBER
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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