1989 Jeep Wrangler strong fuel smell, dumping fuel back int

1989 JEEP WRANGLER
149,800 MILES • 4 CYL • 4WD • MANUAL
Avatar
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 4:54 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 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.
Nov 21, 2009 at 11:12 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.