Spark plug change...few questions - Page 2 - Harley Davidson Forums

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Spark plug change...few questions

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  #11  
Old 03-11-2018, 01:43 PM
ryguylears
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Amazed that that can even happen...how does that unthread itself in the housing? The other plug was really loose as well when i pulled it out.
 
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Old 03-11-2018, 02:23 PM
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A trip to the hardware store did the trick...thank you all for the help. Baffles me how that unthreaded itself.
 
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  #13  
Old 03-11-2018, 02:27 PM
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They do that from vibration - it is very common. OE plugs do not have screw on terminals. You should crimp them a little and make sure they are tight. They make a tool for that too but nearly no one uses or has it.
 

Last edited by Ed Ramberger; 03-11-2018 at 02:28 PM.
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Old 03-11-2018, 02:37 PM
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Good idea to put a dab of silicone paste on the tip (boot end ) of the new plugs when you install them. I wipe the threads with some anti-seize as well. It just makes plug removal a bit less eventful,,,, usually.


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Last edited by HKMark23; 03-11-2018 at 02:43 PM.
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Old 03-11-2018, 04:35 PM
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A little off topic but there’s really no advantage and maybe a couple of disadvantages to running those expensive platinum plugs. You’ve discovered one with the removable tips. The HD Ion sense system is designed for stock plugs. While some bikes work ok with them, some can actually have issues with the non stock plugs.
 
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Old 03-11-2018, 05:26 PM
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Good advice, I did do both when installing as recommended by many folks on the internet.
 
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Old 03-12-2018, 05:45 PM
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each spring a new pair of plugs, anti-seize, and a little dielectric lube in the boot. The cost of a pair of champions is fairly cheap insurance, plus I don't worry about plug life.
 
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Old 03-14-2018, 06:35 AM
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I usually deform the threads slightly on top of the plugs so the cap is a little hard going on. That way the cap doesn't loosen up or unscrew.
 
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Old 03-14-2018, 07:06 AM
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Originally Posted by Hey Man View Post
I usually deform the threads slightly on top of the plugs so the cap is a little hard going on. That way the cap doesn't loosen up or unscrew.
Whats a good way to do this; squeeze the threads with pliars? I'm guessing you wouldn't want to tap on em too hard.

thanx
 
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Old 03-14-2018, 08:28 AM
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Oh quit it...quit pulling our legs

Almost got us there...you jokester you




Originally Posted by ryguylears View Post
good wire
Bad wire
used
used
So I swapped out my spark plugs because I just bought the bike and its got a little over 17k on it. My first question is, one of the boots on the spark plug wires feels like it kind of snaps into place and takes a little effort to pull off again, where as the other boot comes right off. I took a picture inside so you can see what im talking about...the little metal collar in the "bad" boot looks more recessed/smaller. Not sure how bad this is and if i should get it replaced? The bike still started but now im concerned that it could just pop out during a ride.

On another note, just curious how my old spark plugs looked, one was a little whiter than the other, but in looking and comparing to pictures online, they look pretty good to me.

Thank you in advance for any tips or advice.
 
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