1991 Ford E-Series Van Running rich

1991 FORD E-SERIES VAN
135,000 MILES • V8 • 2WD • AUTOMATIC
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JIMBO57301
  • MEMBER
  • 1 POST
My van all of the sudden started idling poorly and black smokes quite often and the gas mileage is way worseand the exhaust pipe is all sooty
Feb 25, 2010 at 1:24 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Could be the oxygen sensor, fuel pressure regulator leaking, coolant temperatureensor in the open loop and excessive fuel pressure due to clogged fuel return line-
Feb 25, 2010 at 1:44 PM
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