Author Topic: Spark plug tips  (Read 1105 times)

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Offline JDhog211

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Spark plug tips
« on: October 21, 2020, 11:49:36 PM »
I have a question concerning the screw on type tips we have on
Our Harley Spark plugs.
My problem is I find when I go to check my
Plugs I find the tips loose, even though I
Tighten them with the aid of pliers.
Have you run into this also.
I was thinking of putting some red Locktite
Next time I find them loose.
Any ideas well appreciated.
Thanks!
JDHog211

Offline wfolarry

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Re: Spark plug tips
« Reply #1 on: October 22, 2020, 03:03:48 AM »
NO on the loctite. It will act as an insulator.

Offline Breeze

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Re: Spark plug tips
« Reply #2 on: October 22, 2020, 03:32:49 AM »
I deform the screw on tip slightly with pliers,vise or a hammer. Only takes a tiny little dent. Better have a spare or two on hand. :SM:
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Offline sfmichael

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Re: Spark plug tips
« Reply #3 on: October 22, 2020, 04:05:06 AM »
won't hurt anything if they're a little bit loose, they're not going to come off and the spark won't know thw difference

if it really bothers you, hold the spark plug with a wrench or socket and then tighten it with pliers - I've never had one come loose when tightened that way
Colorado Springs, CO.

Offline Hossamania

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Re: Spark plug tips
« Reply #4 on: October 22, 2020, 04:15:05 AM »
I "mung" the tip a bit when I tighten them, squeezing them to deform them slightly to keep them from unscrewing. Be careful not to knick the porcelain.
I also use a wrench to hold the plug to be able to tighten the tip tightly.
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Offline rigidthumper

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Re: Spark plug tips
« Reply #5 on: October 22, 2020, 04:31:51 AM »
I don't use screw on tip plugs...
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Offline No Cents

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Re: Spark plug tips
« Reply #6 on: October 22, 2020, 04:51:27 AM »
I don't use screw on tip plugs...


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Offline thumpr54

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Re: Spark plug tips
« Reply #7 on: October 22, 2020, 05:18:58 AM »
Just bugger the threads a bit before you screw the tip on.... will keep it snug
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Offline Fugawee

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Re: Spark plug tips
« Reply #8 on: October 22, 2020, 08:00:14 AM »
I Do the Same Thing.  I Squeeze a Plier Gently on the Starting Threads to Keep the Tip Tight/Snug.  I Have Done that On Many Other Things as Well, Inside and Outside of the H-D World. 

Online Ohio HD

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Re: Spark plug tips
« Reply #9 on: October 22, 2020, 08:07:30 AM »
I don't use screw on tip plugs...

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Offline JDhog211

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Re: Spark plug tips
« Reply #10 on: October 22, 2020, 10:38:05 AM »
Thanks All, Iíll take your advice and deform the
Tip threads up a bit before I screw them on.
JDHog211

Offline mkd

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Re: Spark plug tips
« Reply #11 on: October 23, 2020, 05:08:08 AM »
might be easier to install the post if you take a  side cutter and deform the threads more towards the middle so the starter threads are not deformed.

Offline CndUltra88

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Re: Spark plug tips
« Reply #12 on: October 23, 2020, 02:12:42 PM »
won't hurt anything if they're a little bit loose, they're not going to come off and the spark won't know thw difference

if it really bothers you, hold the spark plug with a wrench or socket and then tighten it with pliers - I've never had one come loose when tightened that way

With or without the motor running.
Sorry I couldnt resist  :idunno:
Rob
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End of Tour April,4,2008 Panjwayi district Afghanistan

Offline sfmichael

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Re: Spark plug tips
« Reply #13 on: October 23, 2020, 09:37:28 PM »
won't hurt anything if they're a little bit loose, they're not going to come off and the spark won't know thw difference

if it really bothers you, hold the spark plug with a wrench or socket and then tighten it with pliers - I've never had one come loose when tightened that way

With or without the motor running.
Sorry I couldnt resist  :idunno:
Rob

depends on your level of acceptable risk :)
Colorado Springs, CO.

Offline Tail Ridr

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Re: Spark plug tips
« Reply #14 on: October 24, 2020, 02:47:06 AM »
might be easier to install the post if you take a  side cutter and deform the threads more towards the middle so the starter threads are not deformed.
That's what I've done over the years, especially with rigid wire boots
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Offline moose

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Re: Spark plug tips
« Reply #15 on: October 24, 2020, 05:13:59 AM »
you can always tighten it till it breaks then back off 1/4 turn :teeth:
Moose aka Glenn-

Offline Hossamania

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Re: Spark plug tips
« Reply #16 on: October 24, 2020, 09:53:24 AM »
you can always tighten it till it breaks then back off 1/4 turn :teeth:

For far too long that was my method.
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Offline sfmichael

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Re: Spark plug tips
« Reply #17 on: November 01, 2020, 06:51:10 PM »
you can always tighten it till it breaks then back off 1/4 turn :teeth:

For far too long that was my method.

   :teeth:
Colorado Springs, CO.