Why does the engine idles rough?

2002 FORD F-150
100,000 MILES
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SANDYBEXPLORER
  • MEMBER
  • 4 POSTS
Black smoke comes from the exhaust.
Oct 17, 2011 at 4:36 PM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
How long since a tune-up? Any applicable trouble codes? To check for codes, at the least, you need an obd2 code reader, that will work with your vehicle. Use a gage and check fuel pressure, not only check for correct pressure, check that the pressure will hold, with everything off. I haven't looked at your specs, usually the pressure shouldn't drop like a rock after the vehicle is turned off.
Oct 17, 2011 at 5:28 PM
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