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2 Stroke Bicycle Engines & Kits 2 stroke motorized bicycle engine kits need careful installation and setup, find out how from our professionals here!


spark plug??????

2 stroke motorized bicycle engine kits need careful installation and setup, find out how from our professionals here!


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Old 03-13-2013, 07:03 PM
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mannyphresh mannyphresh is offline
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Post spark plug??????

Are you suppose to gap the spark plug on a new china 2stroke motor?If so what gap measurement?
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Old 03-13-2013, 08:40 PM
crassius crassius is offline
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Default Re: spark plug??????

usually .028", but if you don't have a feeler gauge a matchbook cover is about .030" and will work OK
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Old 03-13-2013, 09:07 PM
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Default Re: spark plug??????

A plug gauge is about a dollar at the auto parts store... .024-.028
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Old 03-13-2013, 09:09 PM
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Default Re: spark plug??????

Not sure what kind of matchbooks you're used to but that would be closer to about .010. 024 to .028 is a good gap to start with.
Plug gapping tools are cheap, sometimes free at auto parts stores if you ask. Don't guess. Get a guage and set the plug gap correctly.

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Old 03-13-2013, 09:11 PM
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Default Re: spark plug??????

Matchbooks are closer to .012-.018, good for magnetos and points.
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Old 03-13-2013, 09:12 PM
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Default Re: spark plug??????

We must have posted at the same time Tom.
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Old 03-13-2013, 11:01 PM
crassius crassius is offline
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Default Re: spark plug??????

hmmm, I'll need to check that - all that I have around here are 30 to 40 years old : (

maybe they're diff now

or maybe they're like a waistline - expanding with age
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Old 03-15-2013, 07:06 PM
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Post Re: spark plug??????

thanks guys. I was kinda curious and didnt really know.
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