Carb, exhaust, not sure what the issue is - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 09-06-2007, 08:53 PM Thread Starter
Join Date: Apr 2007
Posts: 139
iTrader: (0)
Carb, exhaust, not sure what the issue is

My bike is running rough while riding, seems to idle fine though. It is almost as if it at times it is starving for gas but doesn't die but you can feel it kind of drop in power and then kick back in, not while accelerating but while running at a steady speed, but again idle is fine when not moving. It starts fine and never actually dies. I originally thought it was the spark plugs as the one on the right side of the rear cylinder arcs and you can actually see the spark jumping around. I know the wires need to be replaced but now the past couple of days I have been getting a lot more backfiring and it seems to popping either out of the carbs or the front of the exhaust where it comes out of the engine. I cannot really tell for sure. Any clue about what is happening and where I should look first?
Cardinal Fang is offline  
Sponsored Links
post #2 of 4 (permalink) Old 09-06-2007, 09:16 PM
Members who have donated towards server costs
Crobins365's Avatar
Join Date: Jul 2006
Location: Kennett Square, PA
Posts: 3,505
iTrader: (48)
The sparking/arcing wires are most likely your problem. You're losing "oomph" as it arcs, and then the plug isn't going to fire correctly - and you'll have a loss of power overall. Try using electrical tape to insulate the wire, then see if it runs better. You prob'ly should take off the NEG battery lead first - just 'cause it's electricity and all.

Crobins365 is offline  
post #3 of 4 (permalink) Old 09-06-2007, 10:57 PM
Senior Member
oglejust's Avatar
Join Date: Aug 2007
Location: Paris IL
Posts: 572
iTrader: (2)
Send a message via AIM to oglejust Send a message via MSN to oglejust Send a message via Yahoo to oglejust
ya my bike did this last week... idk about the spark jumping thing but it def. acted the same way. it just kinda came out of it tho lol

1990 Kawasaki Vulcan 750

.... slightly modified
oglejust is offline  
post #4 of 4 (permalink) Old 09-06-2007, 11:49 PM
Senior Member
Join Date: May 2007
Location: Massachusetts
Posts: 387
iTrader: (2)
I agree with Cindy. You will lose a lot of your spark through the arcing. Which will lead to less fuel being burned correctly which leads to increased backfiring. Wrap the plug cables in electrical tape as a temp fix. Get them replaced soon.
Also a dose of Seafoam couldn't hurt.

2001 VN750
Vista Cruise Control
V-Force shield
Kawasaki Saddlebag supports
Fixed trunk hinge
Clear Alternatives LED tail light
Knifemaker style floorboards
Knifemaker style dash
Avon Venom X 110/90 Front
Avon Venom X 170/80 Rear
Big Crank AGM battery
25,100 miles as of 04/20/2010
lancer19 is offline  
Sponsored Links


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