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1986 Chevy Corsica ENGINE RUNNING ROUGH

Tiny
BUD KRAISS
  • MEMBER
  • 1986 CHEVROLET CORSICA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 165,000 MILES
ABOUT ONE DAY AFTER A GASOLINE FILL-UP, MY CAR STARTED WITH A SLIGHT MISS. IT GOT PROGRESSIVELY WORSE IN THE NEXT COUPLE OF DAYS. THINKING I GOT WATER IN THE TANK, I ADDED A MOISTURE REMOVER. THIS DID NOTHING. I THEN ADDED PRESTONE FUEL SYSTEM CLEANER. THE ROUGHNESS IN THE ENGINE IMPROVED SOMEWHAT, BUT AT TIMES WAS JUST AS BAD. ON STARTING, THE CHECK ENGINE LIGHT SOMETIMES BLINKS, THEN GOES OUT. COULD THE PROBLEM BE THE FUEL FILTER? I DONT THINK IT IS AN ELECTRICAL PROBLEM.
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Wednesday, August 26th, 2009 AT 10:04 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, how long since a tune-up? Plugs--plug wires--cap and rotor where applicable-- all filters.

Check for codes, your obd1 so you can check them yourself. Use a gage and check fuel pressure.
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Wednesday, August 26th, 2009 AT 10:49 AM

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