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Changing plugs. When?

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Old

Aug 7, 2008 | 07:24 AM

#1

2006ultra

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Changing plugs. When?

I have an 06 Ultra with 17,000 miles. It runs fine but have been thinking maybe it's time for a set of plugs.

How long do you guys go on a stock set?

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Old

Aug 7, 2008 | 08:15 AM

#2

petemac

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From: MA

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Every 10k miles per the service manual.

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Old

Aug 7, 2008 | 08:16 AM

#3

2005UltraNC

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I change mine when they look ugly - usually every oil change.

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Old

Aug 7, 2008 | 08:20 AM

#4

02flh

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From: Brighton Mi.

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Hi, my 02 flh has 28,000 with Harley plugs (dont know if there are original) but from being a Dyno opperator and owning a tune up business I say if the electroids arn't burnt ,rounded off or arn't coated with anythig don't change them. with the electronics plugs last way better than they used to. Don

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Old

Aug 7, 2008 | 08:30 AM

#5

Peppa1

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From: Tallahassee, Fl

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If you check your owners manual and do the services as they say you can't go wrong !! They been doing this now for about 105 years you know !!

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Old

Aug 7, 2008 | 08:57 AM

#6

FirewallFrank

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any recommendations on plug brand?

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Old

Aug 7, 2008 | 08:59 AM

#7

Curt J

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Joined: Oct 2007

Posts: 220

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From: Cape Cod

Thumbs up

Plugs

Stick with Harley plugs!!!

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Old

Aug 7, 2008 | 10:03 AM

#8

jimsuver

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From: Columbus, Indiana

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For an 07 the book said 20K I would also stay with H-D plugs.

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Old

Aug 7, 2008 | 11:09 AM

#9

Uncle Scrooge

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Joined: Feb 2007

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From: Oklahoma

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Quote:

Originally Posted by 02flh

Hi, my 02 flh has 28,000 with Harley plugs (dont know if there are original) but from being a Dyno opperator and owning a tune up business I say if the electroids arn't burnt ,rounded off or arn't coated with anythig don't change them. with the electronics plugs last way better than they used to. Don

Second that. No point in throwing away perfectly good plugs.

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Old

Aug 7, 2008 | 11:16 AM

#10

dawg

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Joined: Jun 2006

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From: Vermont

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I personally use Autolite 4164's with excellent results and they are cheaper than the
6R12's. I change them out every 10k mark

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