2006 Ford Explorer spark plug #4 consistent replacement

Tiny
WILLRUHL
  • MEMBER
  • 2006 FORD EXPLORER
  • V8
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
I was just wondering why this problem consistently reoccurs? I'm sure it could be a few things but having knowledge of what those few things could be would be helpful.

Thank you in advance for your help!
Thursday, January 8th, 2015 AT 7:30 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It can be a bunch of things best thing here is get a compression check and leak down test on that cylinder see if it may be a something internal or maybe a bad valve seal. It may also be a leaky injector or maybe a bad plug wire
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Thursday, January 8th, 2015 AT 7:42 AM

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