1994 Mercury Marquis Failed Emissions- High Hydrocarbons

Tiny
JRUBIOC5447
  • MEMBER
  • 1994 MERCURY MARQUIS
  • V8
  • 2WD
  • AUTOMATIC
  • 141,000 MILES
Can anyone tell me what it may-be besides spark plugs and coil pack cause I replaced them. Then I checked the cats and both good. Is there anything else I can do?
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Tuesday, October 19th, 2010 AT 6:45 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Could be a lean misfire due to vacuum leaks, injectors, fuel pressure problem to include and engine burning oil thru valves and rings-
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Wednesday, October 20th, 2010 AT 7:41 AM

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