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Guess I need new spark plugs

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  #1  
Old 07-10-2013, 09:47 PM
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Default Guess I need new spark plugs

These only have about 4500 miles on them. Looks like my AFR is a bit lean, too. Good thing these stock plugs aren't too expensive. I'm mostly concerned about the slight corrosion where the plug meets the head. Any similar issues? Thanks for the info
 
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Old 07-10-2013, 10:55 PM
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Wow that is lean. That corrosion is normal. Especially if you live in a tropical climate
 
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Old 07-11-2013, 04:45 AM
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your plug shows nothing but balanced burning. The rust, well I've only seen that after about 2 years of the same plugs.
 
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Old 07-11-2013, 05:08 AM
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Why...?? Center electrode & ground electrode look fine so just clean them up and re-install w/some anti-sieze. 4500 miles and all you see is a little white/lean condition, but that's normal for HD's. When your plugs look like some of these (http://www.aa1car.com/library/reading_spark_plugs.jpg) then...it's time for a swap.
 
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Old 07-11-2013, 06:21 AM
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like he said, never seeze the threads slightly, they look fine.
 
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Old 07-11-2013, 11:59 AM
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Obviously, new plugs won't help the lean condition. They look like typical plugs from a stock motor (except for that corrosion), change them if you want, but you might want to look into something to richen things up a bit.
 
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Old 07-11-2013, 12:08 PM
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Originally Posted by nevil
Obviously, new plugs won't help the lean condition. They look like typical plugs from a stock motor (except for that corrosion), change them if you want, but you might want to look into something to richen things up a bit.
Off topic, but what front fender is that? Nice looking Dyna.
 
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Old 07-11-2013, 12:14 PM
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Originally Posted by Tony P
Off topic, but what front fender is that? Nice looking Dyna.
Thanks. It's a Custom Chrome 40.
 
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Old 07-11-2013, 04:04 PM
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Default Corrosion

The corrosion (rust) on the plugs is from the water sitting in the plug wells...
 
  #10  
Old 07-11-2013, 07:22 PM
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Originally Posted by maddghost
your plug shows nothing but balanced burning. The rust, well I've only seen that after about 2 years of the same plugs.
X2. Your plugs look fine. I bought my 07 dyna almost 4 months ago and my plugs had some corrosion on them likes yours. They were Harley plugs so I assumed they were the stock ones from 07 so I went ahead and changed them for peace of mind. But I am ocd about maintenance and probably over do maintenance sometimes
 


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