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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.

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  #1  
Old 12-23-2009, 05:17 AM
rocketrodney rocketrodney is offline
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Join Date: Dec 2009
Location: Tas
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Default rocketrodney

My new 2 stroke motor runs excellent now.
The porb was bad fuel.
The fuel was from a shed I had for some time.
It was yellowish in colour?!
I dumped the fuel out of the bike and put new fuel in and hey presto. Started first pop!
cheers
Rod.

Last edited by rocketrodney; 12-26-2009 at 12:31 AM.
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  #2  
Old 12-23-2009, 06:08 AM
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rkorson4209 rkorson4209 is offline
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Location: michigan
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Default Re: rocketrodney

Maybe you wanna check your carb float.
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  #3  
Old 12-23-2009, 01:33 PM
Jroll Jroll is offline
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Default Re: rocketrodney

Quote:
Originally Posted by rkorson4209 View Post
Maybe you wanna check your carb float.
+1 There may have been a little piece of dirt that got into your carb and is making the float stick. Stuck float=too much fuel= unburnt fuel dripping out of the exhaust pipe.
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  #4  
Old 12-23-2009, 01:39 PM
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bairdco bairdco is offline
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Default Re: rocketrodney

to be more specific, pull the float bowl off your carb (2 screws) and take out your little plastic float. it should be a hollow plastic donut. if it's full of gas, then it's got a crack in it somewhere, is filling up with fuel, and not "floating" up to shut off the needle valve in your carb, which causes it to flood.

the only real fix for that is a replacement. if it's a new motor, contact your seller and try to get a free float under warranty.

if that's not it, make sure the float tabs aren't bent too far and holding it down, and that they move freely.

also, make sure you turn your fuel petcock off when you're done riding.
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  #5  
Old 12-23-2009, 03:48 PM
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rkorson4209 rkorson4209 is offline
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Default Re: rocketrodney

Quote:
Originally Posted by bairdco View Post
to be more specific, pull the float bowl off your carb (2 screws) and take out your little plastic float. it should be a hollow plastic donut. if it's full of gas, then it's got a crack in it somewhere, is filling up with fuel, and not "floating" up to shut off the needle valve in your carb, which causes it to flood.

the only real fix for that is a replacement. if it's a new motor, contact your seller and try to get a free float under warranty.

if that's not it, make sure the float tabs aren't bent too far and holding it down, and that they move freely.

also, make sure you turn your fuel petcock off when you're done riding.
thank you baird for explainin for me
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  #6  
Old 12-26-2009, 12:35 AM
rocketrodney rocketrodney is offline
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Default Re: rocketrodney

My new 2 stroke motor runs excellent now.
The prob was bad fuel.
The fuel was from a shed I had for some time.
It was yellowish in colour?! Also the 2 stroke oil I was using was only for stationary machinery only. (technical I know but may also had been the prob) I got motorbike 2stroke oil and new fuel and I dumped the old fuel out of the bike and put new fuel in and hey presto. Started first pop!
Thanks to the help everyone.
Rocketrodney
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  #7  
Old 12-26-2009, 02:46 AM
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Dave31 Dave31 is offline
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Default Re: rocketrodney

Glad you got your bike running right Rocket.

I have used gas thats months old (4+) and one bike the Cranbrook which I am co-owner of, runs fine with it. But my Della Cruz bike (motor now on Rockhopper now) will vibrate like crazy and make funny sounds that I have yet to determine what that sound is. I thought it was blowing up and when I finally ran the old fuel out and filled it with fresh fuel it ran great.

Now when I have old fuel I dump it in my truck lol
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