1989 Jeep Wrangler strong fuel smell, dumping fuel back int

1989 JEEP WRANGLER
149,800 MILES • 4 CYL • 4WD • MANUAL
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CRAZYJOE56
  • MEMBER
  • 2 POSTS
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
Nov 21, 2009 at 8:54 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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.
Nov 21, 2009 at 3:12 PM
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