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1996 Ford Bronco random rough idle

Tiny
JSTRICKER
  • MEMBER
  • 1996 FORD BRONCO
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Occasionally I experience rough idle. The truck seems to run fine other then that. Error code, cylinder 6 misfire is appearing. Could a sensor be bad? How do I test?
Friday, March 5th, 2010 AT 3:08 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check spark plug/wire, fuel injector, and compression on #6 cylinder.
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Friday, March 5th, 2010 AT 3:57 PM
Tiny
JSTRICKER
  • MEMBER
  • 2 POSTS
New wires, new injectors. What should the compression be?
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Friday, March 5th, 2010 AT 4:21 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS


https://www.2carpros.com/forum/automotive_pictures/12900_compression_2.jpg



Compression pressures are considered within specification if the lowest reading cylinder is within 25 percent of the highest reading cylinder.

NOTE: Variations exceeding 25 percent indicate an improperly seated valve or worn/broken piston rings.
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Saturday, March 6th, 2010 AT 12:11 AM

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