Battery dies out within 10 minutes - 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 05-13-2010, 06:49 PM Thread Starter
Junior Member
 
Join Date: May 2009
Posts: 8
iTrader: (0)
 
Battery dies out within 10 minutes

If anyone could help? I have an 86 Vulcan 750 with 29,000 miles on it, I'm not too mechanically inclined so you're talking with a rookie here. But after I seen what they were going to charge just to check it I said let me get some help and go for it myself. I bought her the end of last year and really haven't done much to her except the basics for a tune-up.

The problem is I start the bike and watch the voltage on the battery and she starts out with 12.7. When I start her within 10 minutes of idling she drops to 10.9 and dies out. I'll try to restart it and nothing she just clicks at me, so then I have to recharge the battery. I just replaced the battery with a Yuasa 14AHL-BS AGM battery in January, I already purchased a Clymer's manual, still trying to figure that out.

Any ideas what it could be? Any help would be greatly appreciated.
truss is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 05-13-2010, 06:52 PM
Members who have donated towards server costs
 
93VN750's Avatar
 
Join Date: May 2006
Location: Tampa, Florida
Posts: 1,766
iTrader: (2)
 
Send a message via Skype™ to 93VN750
You have a charging system problem. Either a stator, rectifier/regulator, or both. Read up in the Vulcan Versus about how to troubleshoot this. (https://www.vn750.com/forum/forumdisplay.php?f=40)

Let us know what you find out or what questions you have.

Jon

93VN750, under re-construction
vn750.com Member # 828

Rick's Stator and R/R
MF AGM Battery
Coastered
Degoated
Shaved & Jetted
Iridium's
MAC Tapered Staggered Pipes
Battery/Temp/Clock Gauge
Stainless Steel Brake Lines
Dunlop D-404's
23,XXX miles and holding pending gasket change (underway!!!)
93VN750 is offline  
post #3 of 5 (permalink) Old 05-13-2010, 06:54 PM
Senior Member
 
GIMPYRDR's Avatar
 
Join Date: Apr 2008
Location: Pittsburg, TX
Posts: 401
iTrader: (0)
 
X2 what 93VN750 posted.

2005 Vulcan 750
Black and Silver
Windshield
Saddlebags
OEM Hghwy Bars
O-ring Footpegs
OEM Luggage Rack
V&H Exhaust System
TOC ACCT Rebuild
Die Hard Gold AGM MFB
Spline Lube every tire change
VN750 #4393
VROC #31065
TexasVROC
GIMPYRDR is offline  
 
post #4 of 5 (permalink) Old 05-13-2010, 08:03 PM
Members who have donated towards server costs
 
Join Date: Nov 2007
Location: Chandler, Arizona
Posts: 2,838
iTrader: (0)
 
Yep, agreed about the charging system problem, but 10 minutes? I'd say you also have a bad battery as well. There is quite a bit of information on here about how to check the charging system, but I don't remember it, because I've never needed to check mine. I hope it is not the stator, because that means pulling the engine. Jerry.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike

Last edited by VN750Rider/Jerry; 05-13-2010 at 08:05 PM.
VN750Rider/Jerry is offline  
post #5 of 5 (permalink) Old 05-13-2010, 11:13 PM
Linkmeister Supreme
 
OlHossCanada's Avatar
 
Join Date: Aug 2008
Location: Lethbridge, Alberta, Canada
Posts: 7,960
iTrader: (8)
   
You should have a battery terminal voltage of ~14.5 vdc at 4 to 5,000 rpm. Check it and see what you get, then get back to us. Could be reg/rectifier or stator if voltage is lower than specified.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
OlHossCanada 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