Carb Cleaning Additive advice - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 01-20-2009, 09:11 AM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 43
iTrader: (0)
 
Question Carb Cleaning Additive advice

I am suspecting the low speed jet on one carb may be blocked - unable to raise little throttle on on a warm engine. It Idles ok and I can raise the throttle way up as well - but wont hold if i raise it to 1500 rpm.

I do see a lot of SEAFOAM articles - would that be the way to possibly clear the low speed jet or is there something else ?

Thanks

2005 VN750
Not a Virgin but has a Halo
RogerGA is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 01-20-2009, 09:16 AM
Senior Member
 
Scootergptx's Avatar
 
Join Date: Jul 2008
Location: Grand Prairie, TX
Posts: 802
iTrader: (6)
 
That would be the first step I'd take. Much easier to open the gas tank and pour some in than trying to get the carbs off. I'd fill the tank (with gas), put in about 5-6 ounces of SeaFoam and go for a nice ride.

Hopefully, it will loosen up whatever was causing the problem. If not, at least you got to take a nice ride before you had to work on it.

Global warming? So what if my kids never see a polar bear. I never saw a dinosaur and I'm ok.
Scootergptx is offline  
post #3 of 16 (permalink) Old 01-20-2009, 01:55 PM
The Professor
 
lance328's Avatar
 
Join Date: Feb 2008
Location: BUFORD, GEORGIA
Posts: 3,147
iTrader: (15)
   
Quote:
Originally Posted by RogerGA View Post
I am suspecting the low speed jet on one carb may be blocked - unable to raise little throttle on on a warm engine. It Idles ok and I can raise the throttle way up as well - but wont hold if i raise it to 1500 rpm.

I do see a lot of SEAFOAM articles - would that be the way to possibly clear the low speed jet or is there something else ?

Thanks
Seaoam video that dirttrack650 had posted.

http://video.google.com/videoplay?do...26229173&hl=en


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
SYNTHETIC OIL & GEAR LUBE
PLEXISTAR 2 WINDSHIELD
SPLINES LUBED
ACCT'S GREASED W/TOC SPRINGS
COASTERD
LEATHER SADDLE BAGS
LEATHER TOOL AND ROLL BAG
PICKUP COILS GAPPED AT .018"
NGK CAP, WIRES, IRIDUMS
BARNETT FRICTION PLATES & SPRINGS
CUSTOM GRIPS, MIRRORS, LEVERS
ORIGINAL STATOR & R/R 14.5v
DEKA MF AGM ETX15L

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote
lance328 is offline  
 
post #4 of 16 (permalink) Old 01-20-2009, 02:19 PM
Calif Rider
 
weh44att's Avatar
 
Join Date: Jan 2006
Location: Petaluma Calif
Posts: 725
iTrader: (0)
 
Did you do a good draining of the the fuel tank and the Carbs. I really think that a good draining of the carbs is needed more often if you ride alot. I plan to drain mine about every 6 months. Last time I drained them there was evidance of a few particles in the gas that was drained into a white rag.

2004 25,500 miles
Led tail light enhancement
Homemade floor boards
Headlight modulator
Extra heat sink on R+R
R+R relocation
Homemade driver's backrest
Fused Stator
Mcct conversion-cost 4.50
Ride-on in tires
crash bar with home made hyway pegs
iridium plugs
home made fork wind deflectors
coil pickups adjusted.
Kenda kruz tires 110/90 170/80
weh44att is offline  
post #5 of 16 (permalink) Old 01-20-2009, 03:04 PM
CWO3 Navy (Retired)
 
cliffhusn's Avatar
 
Join Date: Sep 2008
Location: Maryland
Posts: 722
iTrader: (7)
 
I run Seafoam in every tankful. Haven't had a problem since doing this. Is the engine stumbling at all? Might want to check the air hose in the air filter housing to see if it's hitting the side of the housing and not letting air in. Happened to me and I secured it so it won't happen again, hasn't stumbled since. Just a thought.

The Flag on my bike honors those who serve our Country and those who have served!
cliffhusn is offline  
post #6 of 16 (permalink) Old 01-20-2009, 08:02 PM
Members who have donated towards server costs
 
Join Date: Oct 2008
Location: LONE TREE IOWA
Posts: 25
iTrader: (0)
 
You might want to check fuel line routing.: i had that problem and found a pinched (to tight a bend) fuel line! Good luck!!
BIRDDOG 54 is offline  
post #7 of 16 (permalink) Old 01-20-2009, 08:54 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 43
iTrader: (0)
 
Thanks Ill check everything and also drain before i Start the Seafoam. Just picked it up from Pepboys

2005 VN750
Not a Virgin but has a Halo
RogerGA is offline  
post #8 of 16 (permalink) Old 01-21-2009, 11:05 AM
Vintage bike addict
 
antiq's Avatar
 
Join Date: Oct 2008
Location: I live in eastern ohio
Posts: 859
iTrader: (3)
 
best of luck to you. While you ride chop the throttle once in a while to get max vacuum to the carbs and draw fuel threough the low speed jets. This may just fix the problem. I've done it with good result a few times on my bikes.

No one can make you feel inferior without your consent.
Eleanor Roosevelt.
antiq is offline  
post #9 of 16 (permalink) Old 01-21-2009, 05:34 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 43
iTrader: (0)
 
Chop the throttle - you mean a sudden throttle open and close ?
Ok i checked all the lines - seemed fine
I placed a tissue below the drain and drained the carb end - Tissue did not show any loose grains or deposits - assuming there is no loose dust or rust
Just poured some seafoam in - its too cold to ride!! Took a small ride inside the streets and came back - will wait for the weather god to be more considerate

Thanks again all
R

2005 VN750
Not a Virgin but has a Halo
RogerGA is offline  
post #10 of 16 (permalink) Old 01-21-2009, 05:58 PM
Vintage bike addict
 
antiq's Avatar
 
Join Date: Oct 2008
Location: I live in eastern ohio
Posts: 859
iTrader: (3)
 
I mean run at higher RPM and suddenly close the throttle. Let the motorcycle coast down in gear a few seconds at a time. Then repeat. Don't allow this activity to endanger your ride. No one should be following when you do this.The idea is to force fuel through the idle jets with the extra vacuum caused when the motor is forced to run with a closed throttle by sheer momentum of the bike. That was my theory when I tried it on my Virago and it did work. I'm still not certain if my theory was correct or why it worked but I was sure happy to avoid removing the carbs.

No one can make you feel inferior without your consent.
Eleanor Roosevelt.
antiq is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Tags
carb cleaner

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