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Old 11-22-2009, 11:19 PM   #521
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261067 miles on my 99 4.6 150 just stated misfiring on # 8 dont know anything on that yet can i get some help?

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Old 11-23-2009, 07:28 PM   #522
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About 30 min ago
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Old 11-23-2009, 10:31 PM   #523
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^^^ woooo hoooooooo
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Old 11-23-2009, 10:43 PM   #524
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98 XL, KC, 4.6, 5spd with 181 000kms
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Old 11-24-2009, 08:06 AM   #525
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That's cool!!
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Old 11-24-2009, 10:45 AM   #526
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Quote:
Originally Posted by beastieboy333 View Post
261067 miles on my 99 4.6 150 just stated misfiring on # 8 dont know anything on that yet can i get some help?
Sounds like a coil may have failed, your truck uses individual coil packs inline with each plug wire, order one online and do it your self. The dealer will charge you a ridiculous price to do it.
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Old 11-25-2009, 07:23 PM   #527
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Originally Posted by beastieboy333 View Post
261067 miles on my 99 4.6 150 just stated misfiring on # 8 dont know anything on that yet can i get some help?
I agree it may be the coil.

I just ran SeaFoam (NAPA) through my 97 (no coils on plug) 291,000 Kilometers
I also ran 6 oz/tank of a home made concoction _ 2 parts acetone, 1 part xylene, 1 part Synthetic two-stroke motor oil. (top end lubrication)

My truck has never ran smoother and it eliminated my miss-fire/stumble. It is now very quiet, smooth, and responsive to the slightest tap on the gas peddle. (Before it was not responsive and when I let off the gas peddle the rpm dropped instantly. Now it instantly revs up and slowly back down.) It's worth a try.....

P.S Just pull the plug. ground, and test it for spark.

Good luck
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Old 11-29-2009, 02:22 AM   #528
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183,000 on my 97
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Old 11-30-2009, 02:37 PM   #529
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2001 f150 screw cab with 229513
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Old 11-30-2009, 02:41 PM   #530
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wow you guys over 200k are giving me hope. That and encouraging me to spend more money on my truck!
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