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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance.

Engine Problems...


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. Ok Everyone I Have Some Problems Ill Be Riding Perfectly Fine And Then It Seems Like I Lose All Power......
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Old 11-01-2009, 07:33 PM
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Default Engine Problems...

Ok Everyone I Have Some Problems Ill Be Riding Perfectly Fine And Then It Seems Like I Lose All Power...the Engine Is Still Some What Running But I Can't Move At All...could It Be The Fuel Line Has To Many Air Bubles?????could That Really Be A Problem??? Any Help Would Be Greatly Appreciated...
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Old 11-02-2009, 07:35 AM
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Default Re: Engine Problems...

If there is a LOT of air bubbles in yer fuel line - it could be a sign of engine vibration frothing the fuel...

But, as Draken mentioned, we need a bit more detail to help ya

So - it'll start and run fine, then conk out on ya? Does it recover? How long does it take to sort itself out? How long can you ride/what speeds before there's a problem?

I know it's so obvious it's silly - but have you gone over your engine to make sure everything is proper? Nothings loosened up on ya?
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Old 11-02-2009, 07:48 AM
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Default Re: Engine Problems...

It could be fuel related, but I doubt it's too much air agitation. Have you removed the fuel tank in tank screen and are you using an external filter? Can you take fuel bowl off and make sure there isn't something in there that plugs the main jet?

I would however look at the spark plug as a first suspect?
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Old 11-02-2009, 09:22 AM
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Default Re: Engine Problems...

Always check the plug first, it will give you (usually) some indication of your engines state of tune, especially if it's fuel related.

Then as stated above, check/clean the whole fuel system.

These tanks are notoriously cruddy inside when shipped.
(rust/funk/paint chips/bugs/cigarette, or some kind of ashes/ect.)
I have seen all of the above.
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Old 11-02-2009, 08:53 PM
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Default Re: Engine Problems...

I've certainly seen plugs goes partially fouled - especially with lousy fuel.
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Old 11-02-2009, 10:23 PM
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Default Re: Engine Problems...

Hard to say....we don't even know what the plug looks like....and that's what I was getting at by mentioning starting with the plug.
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Old 11-02-2009, 10:38 PM
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Default Re: Engine Problems...

No one has mentioned the possibility that his tank isn't venting.
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Old 11-03-2009, 07:23 AM
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Default Re: Engine Problems...

That happens too.....OP needs to report back.
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