Spark Plugs?
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Road Captain
Joined: Oct 2008
Posts: 557
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From: California Central Coast
Spark Plugs?
Which spark plugs do NOT have the little screw-on tops that the spark plug wire connects to? Have noticed that when my bike starts popping back through the carb, there is usually 1 or 2 loose spark plug tops.
Seasoned HDF Member
Joined: Jun 2006
Posts: 28,476
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From: Vermont
I didn't think the HD plugs had the screw-on tops do they? I know the Autolite ones that I use have them.
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Seasoned HDF Member
Joined: Jul 2007
Posts: 6,336
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From: SW Minnesota
Some have four, such as S/E Dual-Plug High-Compression Heads, and the Sportster Sport model came from the factory with dual plug heads.
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Cruiser
Joined: Feb 2008
Posts: 186
Likes: 2
From: Minnesota
Road Dawg is right, the stock plugs do not have a screw on tip.
If you tighten the screw on tip with a pair of pliers before you install the plugs, you will end your problems as well. It is hard to over tighten if you are holding the plug with your bare hand. I think that the manufacturers of these plugs ship them loose, so that, the installer can quickly go either way.
If you tighten the screw on tip with a pair of pliers before you install the plugs, you will end your problems as well. It is hard to over tighten if you are holding the plug with your bare hand. I think that the manufacturers of these plugs ship them loose, so that, the installer can quickly go either way.
Outstanding HDF Member
Joined: Jan 2008
Posts: 3,328
Likes: 15
From: Pacific Northwest
Road Dawg is right, the stock plugs do not have a screw on tip.
If you tighten the screw on tip with a pair of pliers before you install the plugs, you will end your problems as well. It is hard to over tighten if you are holding the plug with your bare hand. I think that the manufacturers of these plugs ship them loose, so that, the installer can quickly go either way.
If you tighten the screw on tip with a pair of pliers before you install the plugs, you will end your problems as well. It is hard to over tighten if you are holding the plug with your bare hand. I think that the manufacturers of these plugs ship them loose, so that, the installer can quickly go either way.