1989 Chevy Silverado flooding

1989 CHEVROLET SILVERADO
244,000 MILES • V8 • 4WD • AUTOMATIC
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RONTHEREDNECK
  • MEMBER
  • 1 POST
I have a 1989 chevy silverado with 350. The truck will start but acts like it is flooding, wont idle, if you let off the gas the truck will die. Lots of black smoke comes from the exhaust. Already changed the computer, coolant temp. sensor, oxygen sensor, and throttle positioning sensor. PLEASE HELP!!!!!
Aug 23, 2008 at 5:00 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the fuel pressure regulator vacuum hose if it has fuel in it-its a goner. Could be excessive fuel pressure/injector/s sticking open and also check the idle air control valve.
Aug 23, 2008 at 5:09 AM
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