Quickie carb cleaning question - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Twins Talk Discussion of Hinckley Triumph Twin related matters and topics. Sponsored By: Throttle Mojo

Reply
 
LinkBack Thread Tools Display Modes
Old 11-12-2012, 07:58 PM   #1 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: 2014 Thruxton
 
eric nyc's Avatar
 
Join Date: Sep 2012
Location: Brooklyn
Posts: 603
Quickie carb cleaning question

So I've been doing some really hard riding in some areas with a ton if dust, sand, mud, and god knows what else over the last two weeks. My carbs are struggling. I basically have to run with the choke at at least 1/2 to even make a run right now. In the long term I know the air filter needs a change and the carbs probably need a thorough cleaning, but I grabbed some carb cleaning spray today and am trying to keep her running at least functionally for another 3-4 weeks before having a proper tuneup and teardown if necessary. Any suggestions?


Sent from my iPhone using Motorcycle.com Free App

Last edited by eric nyc; 11-12-2012 at 08:40 PM.
eric nyc is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-13-2012, 05:57 AM   #2 (permalink)
Senior Member
SuperSport
Main Motorcycle: 2007 Bonnie T100
 
bonza's Avatar
 
Join Date: Sep 2007
Location: Melbourne, Australia
Posts: 1,355
Other Motorcycle: Jeep Wrangler
if you have been riding in a filthy dusty area and you suspect the air cleaner is clogged, then just change it. only takes 10 minutes and unlikely dust would have passed through it into the carbs.
__________________
2007 Tuxedo T100.
Dom Tourers, TTP breathe, baffle gone, 40/140/1 shim 3 turns, TTP stage 1, Hagon Nitros, Dart screen, Pingel fuel valve, Monza gas cap, Burton seat, Avon Roadriders
I like a man who grins when he fights -
Winston Churchill
bonza is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 06:27 AM   #3 (permalink)
Senior Member
Moto Grand Prix
Main Motorcycle: 1995 Daytona 1200
 
SlowPocono's Avatar
 
Join Date: Jul 2006
Location: northeast Pennsylvania
Posts: 2,752
Other Motorcycle: 1979 T140E, '06 Scrambler
Extra Motorcycle: 851 Sprbk, YZF R-1, SV650
If the choke is required to make it run right, I'd look for an air leak first.

Check the connection between the carb and intake manifold.

My guess is that there isn't anything wrong with the carbs.
__________________
When you are dead, you don't know that you are dead.
It is difficult only for the others.
It is the same when you are stupid
SlowPocono is online now   Reply With Quote Quick reply to this message
Old 11-13-2012, 08:38 AM   #4 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: 2012 T100
 
norton74's Avatar
 
Join Date: Jun 2012
Location: Stockbridge, MI
Posts: 759
Other Motorcycle: 2013 Rocket 3 Touring
Extra Motorcycle: '73 Ducati GT750
I agree with SlowPocono. Check for air leaks.

If the air filter was plugged, your bike would run rich. Using the choke would only make things worse.
norton74 is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 11:55 AM   #5 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: 2014 Thruxton
 
eric nyc's Avatar
 
Join Date: Sep 2012
Location: Brooklyn
Posts: 603
I dropped it at the shop today to get a new tube for the rear tire and they're going to take a look at it.

Basically what's happening is it's taking a long time to warm up and when I throttle it, even in neutral, it sputters and stalls without the choke basically all the way out. Once I get it moving the problem seems to go away after about 5-10 minutes and I can close the choke. But even this morning getting it to the garage I almost couldn't get it moving so whatever the issue is it's getting worse with time. It started on Sunday, was a little worse yesterday, and much worse this morning. Hopefully the garage can sort it out - whatever this particular issue is, the air filter also needs to be replaced so they're going to go ahead and do that while they're working on it. But yeah, the fact that it needs a lot more choke than usual would seem to suggest that there's not a problem with not enough air getting to the carbs.
eric nyc is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 11:59 AM   #6 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: '01 Triumph Bonneville
 
Join Date: Sep 2012
Location: Berkeley
Posts: 896
Vacuum leak.
luckyduck is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 12:14 PM   #7 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: 2014 Thruxton
 
eric nyc's Avatar
 
Join Date: Sep 2012
Location: Brooklyn
Posts: 603
Quote:
Originally Posted by luckyduck View Post
Vacuum leak.
I had that thought, but then why would the problem go away as the bike warmed up? Wouldn't that be a constant problem?
eric nyc is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 12:30 PM   #8 (permalink)
Senior Member
SuperSport
Main Motorcycle: 2003 Triumph T100
 
Sheepdog's Avatar
 
Join Date: Nov 2005
Location: Waldheim, LA
Posts: 1,397
Other Motorcycle: 2007 M-G Cali Vintage
As the motor heats up, parts expand and reduce the leaks. My early Bonneville gave me fits with air leaks after pulling the carbs to rejet. I eventually took care of the problem with higher quality HD SS clamps for my intake boots. Place the boots/clamps carefully and avoid overtightening...
__________________
2003 Bonneville T100 and 2007 Moto Guzzi California Vintage
Sheepdog is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 01:01 PM   #9 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: 2014 Thruxton
 
eric nyc's Avatar
 
Join Date: Sep 2012
Location: Brooklyn
Posts: 603
Quote:
Originally Posted by Sheepdog View Post
As the motor heats up, parts expand and reduce the leaks. My early Bonneville gave me fits with air leaks after pulling the carbs to rejet. I eventually took care of the problem with higher quality HD SS clamps for my intake boots. Place the boots/clamps carefully and avoid overtightening...
Just so we're talking about the same thing, are you suggesting there's a leak at the carb air intake? I was thinking it could be a cracked diaphragm in the carb itself.
eric nyc is offline   Reply With Quote Quick reply to this message
Old 11-13-2012, 03:18 PM   #10 (permalink)
Senior Member
SuperSport
Main Motorcycle: 2003 Triumph T100
 
Sheepdog's Avatar
 
Join Date: Nov 2005
Location: Waldheim, LA
Posts: 1,397
Other Motorcycle: 2007 M-G Cali Vintage
Either are possible...and I've experienced both. The spigots on the engine side of the carbs are not very wide. If you are not careful when you reconnect, the clamp can actually slip off of the spigot and create an opening that will allow air within. Get a mirror and check completely around the connection...all it takes is a small misalignment. Also, Ive had problems with the stock clamps pinching the manifold rubbers and creating a leak. Lastly, its easy to unseat the diaphram when replacing the tops on your carburetors. If unseated (or torn), an air leak WILL occur.
__________________
2003 Bonneville T100 and 2007 Moto Guzzi California Vintage
Sheepdog is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
carb cleaning due? BlueTbird Hinckley Classic Triples 3 06-22-2011 10:13 PM
Help with carb cleaning... rwsollars Hinckley Classic Triples 13 10-11-2010 07:16 AM
carb cleaning question grez T3 Sport / Touring Forum 11 10-23-2009 12:10 AM
Quickie tire question ohiorider Twins Technical Talk 2 09-08-2007 07:25 AM
Carb Cleaning jimmyj900 Hinckley Classic Triples 3 05-21-2006 09:44 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 06:13 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum Ducati Scrambler Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.