How To Change Spark Plugs - Honda Rebel Forum
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post #1 of 18 Old 10-16-2012, 06:44 PM Thread Starter
 
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How To Change Spark Plugs

I understand the removal and the tighten by hand and then 1/2 turn after it seats. But before all that, how do I get the old plugs out? Do I pull as hard as I can to get that rubber covering off? And then use a wrench to unscrew it? I have a pic attached:
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post #2 of 18 Old 10-16-2012, 06:53 PM
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Pretty much, yes. Grip it low, don't yank the wire but take it off and use a plug socket.




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post #3 of 18 Old 10-16-2012, 07:15 PM
 
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You need a sparkplug socket wrench to remove a plug. Don't try it with an ordinary wrench, its not worth the damage you will do to the plug and the engine.

Also to tighten a used plug its more like 1/4 of a turn after finger tight, since the crush washer is already crushed and it just needs to be resnugged. Do not overtighten a plug. The soft aluminum head will strip before the hard steel sparkplug thread, and you will be into a nasty and needless repair effort if you strip the plug threads.

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post #4 of 18 Old 10-16-2012, 07:22 PM Thread Starter
 
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Thanks guys.
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post #5 of 18 Old 03-12-2014, 02:08 PM
 
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The spark plugs are my next task. I have the recommended plugs, but I do not have a sparkplug socket wrench. Is there a specific size, or is there only one size of sparkplug socket wrench?

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2006 Honda Rebel 250
2011 Triumph Bonneville T100
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post #6 of 18 Old 03-12-2014, 03:22 PM
 
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I believe it's 18mm
not sure about the Rebel but some bikes you need a thin wall socket (think Craftsman, not bob's spark plug sockets)
on some bikes only the socket in the factory tool kit will work

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post #7 of 18 Old 03-12-2014, 04:48 PM
 
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5/8" worked. Just popped to Advanced Auto & bought what they had on the shelf. I bought a cheapy gauge for the gap and the new ones were spot on.

My next question is, should my old plugs look like mine do? Or does the blackness suggest a problem?

As a background, I suspect the plugs have never been changed and the bike has almost 14k miles on the clock.


https://jellysrebel.shutterfly.com/pictures/25#29

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post #8 of 18 Old 03-12-2014, 04:57 PM
 
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Aside from the rust, those plugs are not real bad. The blackness might be due to a rich idle condition, the insulators look OK suggesting that if you took it out on the highway and ran it up to speed and then chopped the engine and pulled the plugs they might look quite different, The bike has obviously sat outside for a long time for the plugs to get that rusty.

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post #9 of 18 Old 03-12-2014, 05:12 PM
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The plugs don't look that bad. You should check your air filter and make sure it don't need replaced. A dirty filter can cause it to run rich.




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post #10 of 18 Old 03-12-2014, 05:15 PM
 
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Thank you for the input. I've had the bike about 3 months now and am the 3rd owner at least. I keep the bike outside, but it is covered with a waterproof motorcycle cover. If my husband passes his msf and buys a bike too then we might invest in a shed But I'm glad the blackness could be considered fairly typical.

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