Cruzers rejet question - 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 3 (permalink) Old 07-25-2019, 11:09 AM Thread Starter
Junior Member
 
McLawhorn's Avatar
 
Join Date: Jul 2019
Posts: 3
iTrader: (0)
 
Hello everyone. I am new to the forum and new to motorcycles. I have an '87 VN750 that has had a lot of carb work done on it (no mods, all stock). Once I got it running, I installed a set of cruzers. Now, I have a popping and backfire between 3 and 4k rpms when downshifting or letting off the throttle. Attempted to adjust air/fuel mixture screws. Rear carb was turned out about 4 1/4 turns and rpms still increasing. Bike never bogged down or shut off with both screws all the way in. No ear shave and don't plan on it Here's the question. Do I need to just keep tinkering with air/fuel mixture screws, rejet, or just live it. If rejet is required, whick kit should I get? I know nothing about the jet sizes. Thanks!

Last edited by McLawhorn; 07-25-2019 at 11:39 AM.
McLawhorn is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 07-25-2019, 12:16 PM
Senior Member
 
Spockster's Avatar
 
Join Date: Nov 2012
Location: WV
Posts: 6,483
iTrader: (5)
   
Quote:
Bike never bogged down or shut off with both screws all the way in.

That usually indicates a dirty carb. Need to make sure that's addressed before trying to tune.

What color are the plugs? That's what will determine jetting.

Don't think there are any kits, just have to order the jets you want to try, I've seen prices on single jets from $6-8 each.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
Spockster is offline  
post #3 of 3 (permalink) Old 07-26-2019, 01:10 PM Thread Starter
Junior Member
 
McLawhorn's Avatar
 
Join Date: Jul 2019
Posts: 3
iTrader: (0)
 
Brand new ngk plugs and fresh rebuild and cleaning on carbs.
McLawhorn 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