1993 Ford E-Series Van hard to start then black smoke

1993 FORD E-SERIES VAN
Avatar
PEDRODONNA
  • MEMBER
  • 1 POST
Engine Performance problem
1993 Ford E-Series Van V8 Two Wheel Drive Automatic
----------------------------------------------------------------
troble starting...then after many tries it starts but runs weak and black smoke out of tail pipe. Replaced the fuel pump, filter and plugs..no help
Aug 9, 2008 at 5:20 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Sounds like its too rich of a mixture

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.
Aug 9, 2008 at 5:34 PM