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

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  #1  
Old 03-19-2017, 10:14 PM
Losingchampion Losingchampion is offline
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Default No start up on a 80cc engine

I have a spark, and the piston moves when I pedal with the clutch untouched. It sound like it wants to start or that the piston is moving extremely fast either way no start. I've been trying different things going on some forums. I've replaced the magneto, cdi and spark plug. Although I the fuel doesn't move on its own down to the engine the spark plug had gasoline on it. The pistons well lubricated. Also the clutch is very tight as in I move the wheel a couple of inches and the piston is on the opposite side.
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Old 03-20-2017, 12:04 AM
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Kioshk Kioshk is offline
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Default Re: No start up on a 80cc engine

Sounds like your magnet may be installed the wrong way. This would screw the timing up.

You're sure it's gasoline you're using?

Also, what did you mean by "the fuel doesn't move on its own"?
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Old 03-20-2017, 10:43 AM
crassius crassius is offline
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Default Re: No start up on a 80cc engine

go thru the steps in the 'no start' thread and check carefully several times as it is easy to wire backwards and not check again as that step was already done

I note you didn't mention if spark was there
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Old 03-20-2017, 11:40 AM
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Kioshk Kioshk is offline
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Default Re: No start up on a 80cc engine

Quote:
Originally Posted by Losingchampion View Post
I have a spark
Quote:
Originally Posted by crassius View Post
I note you didn't mention if spark was there
......
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Old 03-20-2017, 12:10 PM
crassius crassius is offline
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Default Re: No start up on a 80cc engine

early mornings I'm on a really crappy 'puter that is hard to read

makes the point about checking several times tho
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Old 03-20-2017, 12:54 PM
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Kioshk Kioshk is offline
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Default Re: No start up on a 80cc engine

Been there...

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Old 03-20-2017, 11:07 PM
Losingchampion Losingchampion is offline
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Default Re: No start up on a 80cc engine

Well i have to angle the the bike upward like doing a wheely to get the gas moving down. On the gas topic i used a 16:1 ratio with two cycle oil from walmart. And yes i have a whiteish kinda of spark.
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Old 03-20-2017, 11:10 PM
Losingchampion Losingchampion is offline
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Default Re: No start up on a 80cc engine

Although ill check up on the no start forums. Thanks
For the replies!
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Old 03-21-2017, 12:19 AM
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Tyler6357 Tyler6357 is offline
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Default Re: No start up on a 80cc engine

Read--> http://motorbicycling.com/showthread.php?t=35090
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  #10  
Old 03-21-2017, 12:34 AM
mike carter 2 mike carter 2 is offline
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Default Re: No start up on a 80cc engine

what do you mean...gas only flows when you do a wheely?how is the fuel tank mounted?is carb leval?float level?please post picks.
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