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

1993 FORD E-SERIES VAN
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PEDRODONNA
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  • 1 POST
Engine Performance problem
1993 Ford E-Series Van V8 Two Wheel Drive Automatic
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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
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RASMATAZ
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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
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