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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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Old 05-23-2013, 10:34 PM
dumpstercrusher dumpstercrusher is offline
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Join Date: May 2013
Location: Glen Burnie, Maryland
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Default Re: spak plug head comes loose

Originally Posted by 2door View Post
You need to go to an auto parts store and look at a real spark plug. You'll see the top is different in that there is a cap, about 3/16" in diameter on the top. The automotive plug boot I mentioned has a matching female connection that snaps onto a standard spark plug. Those kit plugs and plug boots are a joke. Get rid of them or you'll continue to have nothing but problems with them.

The kit plug has a threaded portion that is supposed to snap into the kit boot. It is a bad electrical connection prone to failure and poor engine performance. Do not order plugs or plug boots from engine kit suppliers or you'll get the same parts and be back to square one. Replace both with good automotive quality parts and you can forget about spark plug problems.

sweet, thanks! ill def n try to go look at some tomorrow. Also does it matter what size spark plug i can use? Bikeberry had a spark plug that was much bigger for an easier start up
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Old 05-24-2013, 09:07 AM
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CTripps CTripps is offline
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Join Date: Aug 2011
Location: Vancouver, B.C.
Posts: 1,311
Default Re: spak plug head comes loose

The main thing that matters with the plug is that it doesn't extend too far into the engine. You don't want the piston smacking into the bottom of the plug. Bad things can happen then.


Any day that starts with a good ride is already a better day, and a bad day riding still beats a good day working.

My Builds: My Beast, Harley59's bike, my Cruiser
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