It just will not Start! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 05-14-2013, 01:01 PM Thread Starter
Junior Member
Join Date: May 2013
Posts: 1
iTrader: (0)
Question It just will not Start!

I am somewhat new to a Vulcan. I am helping my friend who bought a 92 Vulcan 750 a couple of years ago and was always having problems with it until it simply would not start any more. We researched the problem and found it was not getting enough juice to keep running and determined the Stator and Rectifier were shot. During the teardown to fix it we found antifreeze in the oil and realized the Mechanical seal was shot. We fixed all that and put it back together. I would not start. I checked float levels and found them very high. We pulled the carbs and rebuilt them. I also found debris in the petcock so we rebuilt it. Should be good to go. We get spark and we seem to get fuel into the cylinders. It just will not even sputter. Is there anything special about the Vulcan to consider?
bashtonrcdd is offline  
Sponsored Links
post #2 of 8 (permalink) Old 05-14-2013, 01:33 PM
Senior Member
Join Date: Nov 2010
Posts: 459
iTrader: (0)
Have you tried spraying QuickStart in the intake to eliminate the possibility of it being a fuel issue? You may also try cranking with the fuel valve off to ensure its not a flooding issue. Of course spark the plug on the side of the cylinder to check spark. Check compression (which I think you said you did). Resistance test on coils?

RobertGary1 is offline  
post #3 of 8 (permalink) Old 05-14-2013, 03:46 PM
Senior Member
kc2dgq's Avatar
Join Date: May 2010
Location: New Jersey
Posts: 3,352
iTrader: (13)
If you got all 3 without excess should run.

Check your air filters and make sure the plugs are not fouled or flooded.
If you have good battery voltage at the coil primary, and you get a spark on all 4 plugs, it should at least fire.

Are you using the choke at all?
adding choke is actually the opposite of is a fuel enrichener it may be flooding it if the choke is causing the plugs to get too wet.

Also check the boots on the carbs to ensure there are no craks or leaks just in case.
kc2dgq is offline  
post #4 of 8 (permalink) Old 05-14-2013, 05:09 PM
Members who have donated towards server costs
JM2001's Avatar
Join Date: Mar 2011
Location: Rochester, New York
Posts: 1,803
iTrader: (1)
Start with the basics. Are your spark plugs good? Is your battery showing at least 12.5 volts? You could run jumpers from a car battery to your battery and see if it fires. DO NOT have the car running. Yours sounds like an ignition problem rather than fuel or air.


" Loud Pipes Risk Rights "

2001 Vulcan 750
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
decals removed
upgraded mirrors
Pic up coil mod done
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #5 of 8 (permalink) Old 05-14-2013, 06:05 PM
Senior Member
kc2dgq's Avatar
Join Date: May 2010
Location: New Jersey
Posts: 3,352
iTrader: (13)
check your grounds from the battery to frame....and the engine ground strap.
kc2dgq is offline  
post #6 of 8 (permalink) Old 05-15-2013, 10:28 AM
slimvulcanrider's Avatar
Join Date: May 2008
Posts: 8,695
iTrader: (3)
how far into the engine did you go? are you sure the cam chains didn't jump a tooth? did you put the pickup (pulsator) coils back in the correct spots?
slimvulcanrider is offline  
post #7 of 8 (permalink) Old 05-15-2013, 08:17 PM
Junior Member
Join Date: May 2013
Location: Azores
Posts: 20
iTrader: (0)
Hey, i have a 1992 vn750 A8 so i suppose is the same has your friend's, and i had the same problem...

I took some steps and it solved it

1- my stator was dead i had to replace it
2- Rectifier was dead also, and i replace it
3- I set a new battery
4- Carbs, i found out that 1 of the 2 diaphragms had a small hole, so i replaced it, reajusted the carbs fuel and air flow
5- Repared a hole in the rubber tube connecting the air filter to the carb
6 - New spark plugs

Then started the bike took a bit but never did the same again, and i used a jump cable to a car battery for a stronger start, so it can be a good advice also
bug is offline  
post #8 of 8 (permalink) Old 05-15-2013, 08:36 PM
Registered User
Join Date: Aug 2011
Location: GreenwoodFrickinLakeNY
Posts: 10,354
iTrader: (8)
Make sure you modify your profile to reflect your location, and add yourself to the members actually have a few members close by that could help you out maybe in person.

Wolfie is offline  
Sponsored Links


carborator , ignition , vulcan 750

Quick Reply

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


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

Email Address:


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