Bike dies when jumper cables disconnected - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 02-27-2017, 07:43 PM Thread Starter
Junior Member
 
Join Date: Feb 2017
Posts: 8
iTrader: (0)
 
Bike dies when jumper cables disconnected

Hey guys i got my new (1992) bike running after cleaning the carbs and using a different take to fuel it once it was running i disconnected the jumper cable and it immediately died. Restarted it using jumper cables and let it run for a while then tried again to disconnect and it would idle (sort of ) and the lights would get bright then dim ,and repeat as it idles then tried to give it gas and it died again. So I came inside and did a search to see if the bike should run with no battery and the answer i found seems to be yes.
So I know I need a new battery and I can't really test the charge output until I do so but my question is do you think my stator or something else is bad or should a new battery just fix this all?

Last edited by dc4114dc; 02-27-2017 at 07:58 PM.
dc4114dc is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 02-27-2017, 08:09 PM
Senior Member
 
shark88's Avatar
 
Join Date: Jan 2008
Location: Central, PA
Posts: 2,484
iTrader: (27)
 
Garage
If it's running while on jumper cables you can probably still check the voltage output to the battery. Just make sure the vehicle you're jumping it from is turned off. You should be getting 14+ volts at 3-5k rpm's. If not then you have problems.

"Show me a man who makes no mistakes, and I'll show you a man who doesn't do things." Theodore Roosevelt."

2007 Victory Kingpin
Current projects - 1986 VN750 & 1988 EL250
shark88 is offline  
post #3 of 5 (permalink) Old 02-27-2017, 08:16 PM Thread Starter
Junior Member
 
Join Date: Feb 2017
Posts: 8
iTrader: (0)
 
I thought of that after I put the bike away and went inside and it's supposed to rain here the next two days. So I can't really recheck until later on. But once it's running shouldnt the bike stay running dead battery or not?

Sent from my SCH-I545 using Tapatalk
dc4114dc is offline  
 
post #4 of 5 (permalink) Old 02-27-2017, 10:24 PM
Senior Member
 
cglennon's Avatar
 
Join Date: May 2008
Location: Portland, OR
Posts: 731
iTrader: (0)
 
Send a message via Skype™ to cglennon
Quote:
Originally Posted by dc4114dc View Post
Hey guys i got my new (1992) bike running after cleaning the carbs and using a different take to fuel it once it was running i disconnected the jumper cable and it immediately died. Restarted it using jumper cables and let it run for a while then tried again to disconnect and it would idle (sort of ) and the lights would get bright then dim ,and repeat as it idles then tried to give it gas and it died again. So I came inside and did a search to see if the bike should run with no battery and the answer i found seems to be yes.
So I know I need a new battery and I can't really test the charge output until I do so but my question is do you think my stator or something else is bad or should a new battery just fix this all?
The answer is NO. The electrical system on these bikes (and may others) is primitive and will not run without a good battery installed (or jumped as you have here). Remove the good battery or jumped one (surrogate battery) and the bike will die. Some big touring bikes, such as the Honda Goldwing, will run without a battery, but not the VN750.


Chris Glennon - Portland, OR
cglennon is offline  
post #5 of 5 (permalink) Old 02-27-2017, 11:15 PM Thread Starter
Junior Member
 
Join Date: Feb 2017
Posts: 8
iTrader: (0)
 
Quote:
Originally Posted by cglennon View Post
The answer is NO. The electrical system on these bikes (and may others) is primitive and will not run without a good battery installed (or jumped as you have here). Remove the good battery or jumped one (surrogate battery) and the bike will die. Some big touring bikes, such as the Honda Goldwing, will run without a battery, but not the VN750.
This is good news for me, Hopefully it means that my electrical system may be just fine guess i'll test the stator and regulator after I get a battery instead of jumping to conclusions. Thanks for the help!
dc4114dc is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome