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, if you could use some help in figuring out what is wrong with your bicycle motor and what needs to be done to achieve top performance.


Air leak?

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


Reply
 
Thread Tools Display Modes
  #11  
Old 04-12-2013, 06:05 PM
maniac57's Avatar
maniac57 maniac57 is offline
Motorized Bicycle Elite Member
 
Join Date: Oct 2011
Location: memphis Tn
Posts: 3,124
Thanks: 194
Thanked 333 Times in 305 Posts
Default Re: Air leak?

Yes, it sounds like an air leak somewhere. I'd check the crankcase seals if you find nothing elsewhere.
__________________
If more is better, then too much is just enough.
If you can't afford it, build it yourself.
Reply With Quote
  #12  
Old 04-12-2013, 08:42 PM
2door's Avatar
2door 2door is offline
Super Moderator
 
Join Date: Sep 2008
Location: Littleton, Colorado
Posts: 12,734
Thanks: 1
Thanked 584 Times in 465 Posts
Default Re: Air leak?

Quote:
Originally Posted by maniac57 View Post
Yes, it sounds like an air leak somewhere. I'd check the crankcase seals if you find nothing elsewhere.
I agree. The seal behind the magneto rotor (magnet) is highly suspect. If the factory doesn't drive the seal in corrrectly the rotor will rub it destroying it. I've seen a couple of those but members here have also found the right side seal behind the primary gear defective too.
If you're confident that you've sealed the intake and carburetor and you still have the symptoms you're describing then take a look at your crankshaft seals.

Tom
__________________
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"
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 04:25 AM.


Sponsors

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
MotorBicycling.com