2000 Mercury Sable rough running cylinder 5 misfire

Tiny
RICKERFAM4
  • MEMBER
  • 2000 MERCURY SABLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 65,000 MILES
Car was running fine and all of a suden got to drive it one day and car ran rough and then smooth and then rough etc. Seems like its not running on all cylinders. Borrowed a engine analizer and hooked it up to the car ad it gave me a code-po305 cylinder 5 misfire detected, what should I do?
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Saturday, December 20th, 2008 AT 2:16 PM

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Tiny
RASMATAZ
  • MEMBER
For a start check that cylinder's sparkplug, compression and injector

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Saturday, December 20th, 2008 AT 2:52 PM

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