Motorized Bicycle: Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle: Engine Kit Forum > Bicycle Motor > Motorized Bicycle Trouble Shooting

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.

Reply
 
Thread Tools Display Modes
  #1  
Old 03-29-2009, 05:33 PM
Absocold Absocold is offline
Motorized Bicycle Member
 
Join Date: Jul 2008
Location: Twin Cities, MN
Posts: 26
Default Carb leaking on four stroke!

My 4 stroke stage II Grubee has been running wonderfully the last few weeks. Today I took the engine off to install better hardware to attach it to the bicycle. The only other thing I did was to change the oil. In any case, I put the engine back on the bike, got everything hooked up, and the carb started leaking. It was coming out of the air intake, almost like it was constantly overflowing the bowl and had nowhere else to go. How do I fix it?
Attached Thumbnails
Click image for larger version

Name:	IMAGE_049.jpg
Views:	49
Size:	248.0 KB
ID:	6918   Click image for larger version

Name:	IMAGE_050.jpg
Views:	41
Size:	216.7 KB
ID:	6919  
Reply With Quote
Sponsored Links
  #2  
Old 03-30-2009, 10:28 AM
HoughMade's Avatar
HoughMade HoughMade is offline
Motorized Bicycle Elite Member
 
Join Date: Apr 2008
Location: Valparaiso, IN
Posts: 626
Default Re: Carb leaking on four stroke!

I would take off the fuel bowl and see if the float is working correctly.
__________________
29/10ths cubic inches of raw power.
HoughMade at WIRED.com: http://www.wired.com/cars/coolwheels...memade_bicycle
Reply With Quote
  #3  
Old 03-30-2009, 10:31 PM
Absocold Absocold is offline
Motorized Bicycle Member
 
Join Date: Jul 2008
Location: Twin Cities, MN
Posts: 26
Default Re: Carb leaking on four stroke!

What will the float do if it is working correctly?
Reply With Quote
  #4  
Old 03-30-2009, 10:37 PM
toytime toytime is offline
Motorized Bicycle Elite Member
 
Join Date: Mar 2008
Location: Ontario
Posts: 550
Default Re: Carb leaking on four stroke!

I'd give the carb bo a sharp blow with a screw driver handle to see if the float is just stuck. It happens when an engine may have been on it's side.
A float works just like the float in your toilet Absocold, it rises with the fuel level and when the bowl fills up, the float shuts off the flow. I'd bet your float just got caught up from working on the engine.

Last edited by toytime; 03-30-2009 at 10:41 PM.
Reply With Quote
  #5  
Old 03-31-2009, 01:25 PM
HoughMade's Avatar
HoughMade HoughMade is offline
Motorized Bicycle Elite Member
 
Join Date: Apr 2008
Location: Valparaiso, IN
Posts: 626
Default Re: Carb leaking on four stroke!

Quote:
Originally Posted by Absocold View Post
What will the float do if it is working correctly?

When you push it up, the gas will stop flowing, when you let it hang down, your hand will get wet. Also, is the float itself full of gas? If so, it won't float.
__________________
29/10ths cubic inches of raw power.
HoughMade at WIRED.com: http://www.wired.com/cars/coolwheels...memade_bicycle
Reply With Quote
  #6  
Old 04-02-2009, 09:58 AM
Norman's Avatar
Norman Norman is offline
LORD VADER Moderator
 
Join Date: Jan 2008
Location: pampa texas
Posts: 2,685
Default Re: Carb leaking on four stroke!

when the float fills with fuel it goes from being a float to a sink!
Sorry I couldn't help it.
Your float might have stuck or sunk. you might even have something in the needle that the float opens and closes making it stick and over run the floats bowl. You should be able to work on it take pictures of it as you take it apart or draw how it looks as you take it apart. then you will know how to put it back together again.
Grab your tools and fix it
Norman
__________________
norms-iron-works.tripod.com
Reply With Quote
  #7  
Old 04-02-2009, 10:44 AM
HoughMade's Avatar
HoughMade HoughMade is offline
Motorized Bicycle Elite Member
 
Join Date: Apr 2008
Location: Valparaiso, IN
Posts: 626
Default Re: Carb leaking on four stroke!

Don't know about your installation, but I can take the bowl off pretty easily with the engine and everything else in place.
__________________
29/10ths cubic inches of raw power.
HoughMade at WIRED.com: http://www.wired.com/cars/coolwheels...memade_bicycle
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:07 AM.


Sponsors

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2012, vBulletin Solutions, Inc.
Motorized Bicycle Engine Kit Forum