2004 Ford F-150 Spark Plugs

Tiny
WALTER VAN HORN
  • MEMBER
  • 2004 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 70,000 MILES
About 6 weeks ago truck started missing. Took to local shop, they diagnosed as spark plug being bad. Replaced NGK plug with new one. Fine until today. Left to go on day trip. Engine light came on. Statred missing. We drove about 20 miles to get back home. Took to shop. They diagnosed as bad plug. Could not get out. Called local Ford dealer. Appt in morning. They said to replace it would be about $275.00. Is this reasonable? What is going on with plugs going bad at 70,000. Our Xmas trip is just about ruined. Please help. Thank you.
Wednesday, December 19th, 2007 AT 6:55 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,386 POSTS
Is not rare for plugs to get worn at 70k miles! To get it out run the engine till its hot then try and get it out.

Make sure it has proper gap on it!
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Wednesday, December 19th, 2007 AT 7:54 PM

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