Motorized Bicycle Engine Kit Forum
Register FAQ Members List Calendar Mark Forums Read


Search Titles Only

Sponsors


Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle > Motorized Bicycle General Discussion

Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles

70cc Old Dog Won't Start


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. I Was Out Of Town For A Month When I Got Home Tried To Start The Old Dog 70cc. It ...
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 05-29-2008, 03:45 PM
Motorized Bicycle Apprentice
 
Join Date: Mar 2008
Posts: 12
Angry 70cc Old Dog Won't Start

I Was Out Of Town For A Month When I Got Home Tried To Start The Old Dog 70cc. It Would Start And Then Dies Like It Is Not Getting Gas There's Gas In The Bell And A Little On The Plug It Just Will Idle For 2 Seconds And Then Dies Can Anyone Help.. Thanks Zoomcat
Reply With Quote
  #2 (permalink)  
Old 05-29-2008, 03:54 PM
Pablo's Avatar
Master Bike Builder & Forum Sponsor
 
Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 1,661
Default Re: 70cc Old Dog Won't Start

Sounds like the jet or inlet or tank exit (in-tank screen) or something in the fuel system is gummed/clogged up....if it was running before.

Take the fuel stuff off, clean it up. Pretty easy (even if it doesn't help!)

I don't use an intank screen, just a big inline filter.
Reply With Quote
  #3 (permalink)  
Old 05-29-2008, 05:09 PM
Saddletramp1200's Avatar
Master Motorized Bicycle Builder
 
Join Date: May 2008
Location: Corpus Christi, Texas
Posts: 645
Thumbs up Re: 70cc Old Dog Won't Start

No Problem, The gas we get now is junk. The carb jets are clogged. Take the bowl off of the carb. Get some Carb Choke Cleaner. Wal-Mart. 1.00 or so.
Spray the jets with the plastic hose provided with the can. Make sure they are clean. Wear eye protection, and DON'T smoke! Do it outside. Put new gas in the tank As soon as you can. Clean the air filter while your there. If it wont
run do it again. Those jets will not work in they are clogged.
Reply With Quote
  #4 (permalink)  
Old 05-29-2008, 07:22 PM
Senior Motorized Bicycle Builder
 
Join Date: May 2008
Location: Long Island, New York
Posts: 80
Default Re: 70cc Old Dog Won't Start

Everytime mine pulls this garbage on my bikes it's almost always a spark issue. The CDI units keep failing for me for some reason when I leave them not running for a while. This explains why you have fuel in the cylinder and on spark plug but it's not running. The spark is weak.
Reply With Quote
  #5 (permalink)  
Old 05-29-2008, 10:01 PM
Motorized Bicycle Apprentice
 
Join Date: Mar 2008
Posts: 12
Default Re: 70cc Old Dog Won't Start

thanks. nitro it runs for about 3 seconds then dies. i think your right. where can i buy the cdi unit .thanks zoomcat
Reply With Quote
  #6 (permalink)  
Old 05-29-2008, 10:08 PM
Senior Motorized Bicycle Builder
 
Join Date: May 2008
Location: Long Island, New York
Posts: 80
Default Re: 70cc Old Dog Won't Start

Motorized Bicycle Engine Kit Parts 2 stroke 4 cycle kits REVOLUTIONCYCLES.US About half way down the page you will find it's 20 bux shipped. I've ordered parts through him before and shipping is super fast. Other people have a problem with his kit's, but I've never had any issues with ordering parts. I get them in 2 days across the country.
Reply With Quote
  #7 (permalink)  
Old 05-30-2008, 06:52 AM
Bikeguy Joe's Avatar
MODERATOR
 
Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 4,060
Default Re: 70cc Old Dog Won't Start

Quote:
Originally Posted by ZOOMCAT View Post
thanks. nitro it runs for about 3 seconds then dies. i think your right. where can i buy the cdi unit .thanks zoomcat
You can order one from thatsdax.com shipping included in the cost.
__________________
If it ain't broke, and you mess with it long enough, it will be.
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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 03:58 AM.


Advertisers

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.1.0
Motorized Bicycle Engine Kit Forum