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Starting Up


Discussion at Motorized Bicycle Engine Kit Forum in the 2 Stroke Bicycle Engines & Kits forum. Anyone experience this? I got a grubee skyhawk. When I first got it. I would pedal my bike about a ...
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Old 10-12-2009, 12:40 PM
Motorized Bicycle Member
 
Join Date: Aug 2009
Location: Chicago
Posts: 22
Default Starting Up

Anyone experience this?

I got a grubee skyhawk.

When I first got it. I would pedal my bike about a 100ft and the engine would start up very
easily. It was a very effortless start up.

Lately now, I noticed I really really have to pedal very fast/hard for almost half a block to get
the engine started. If I dont, the engine would sputter a bit and die off.

Is this a sign of a big problem? Any ideas?
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Old 10-12-2009, 12:48 PM
BarelyAWake's Avatar
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Join Date: Jul 2009
Location: Maine
Posts: 1,197
Default Re: Starting Up

Hard starts are pretty hard to diagnose remotely - but have you checked the plug? It's color? How does it run when it does start? Have you changed anything like yer fuel air settings or it's oil/fuel ratio?

*shrug* it could be as simple as needin' a lil choke/prime to start
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Old 10-12-2009, 01:24 PM
Venice Motor Bikes's Avatar
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Location: Los Angeles, CA.
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Default Re: Starting Up

I say check ur plug!! 24:1 mix fer break in!!
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Old 10-12-2009, 02:45 PM
Motorized Bicycle Member
 
Join Date: Aug 2009
Location: Chicago
Posts: 22
Default Re: Starting Up

spark plug and fuel/oil ratio is fine. When the engine does start up, everything is good. I can
accelerate to 28 mph with no problems.

Its the initial pedal to start engine is the slight problem. I'm almost out of breath trying to
pedal as fast as I can to get it started.

How much gap on the plug do you all use?

Thanks everyone.
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Old 10-13-2009, 02:44 AM
Junster's Avatar
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Join Date: Jun 2009
Location: Washington St.
Posts: 391
Default Re: Starting Up

Have you checked the head bolts? Sounds like a loss of compression.
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Old 10-13-2009, 12:08 PM
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Join Date: Jun 2009
Location: ny,ny
Posts: 602
Default Re: Starting Up

These are much harder to start when it's gets colder.
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