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1990 Chevy Lumina idling and running rough

Tiny
RIDDLER33
  • MEMBER
  • 1990 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 202,000 MILES
I recently used an in tank injector cleaner.2 days later the car started running rough. I also noticed that the mileage has decreased. Any help would be appreciated.
Saturday, March 13th, 2010 AT 5:21 PM

2 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Sounds like you have awaken something up, I would change the fuel filter first, then check fuel pressure and pressure regulator.
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Friday, March 19th, 2010 AT 10:50 AM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm
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Friday, March 19th, 2010 AT 10:52 AM

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