Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
carb sync troubles... carb sync troubles...
Register FAQ Calendar Today's Posts
Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by Andy Miller, UK, Taking a rest, Jokulsarlon, Iceland

I haven't been everywhere...
but it's on my list!


Photo by Andy Miller, UK,
Taking a rest,
Jokulsarlon, Iceland



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 18 Jun 2004
jim jim is offline
Gold Member
Veteran HUBBer
  
Join Date: Aug 2003
Location: Cape Town South Africa
Posts: 222
carb sync troubles...
The Mzungu has another dilema...

I cant get the card sync right on my 34L, I know the 6mm drill bit trick, but it doesnt work: if I do that then when the carb is full open my secondary butterfly is way past horizontal. At the moment Ive set it so that on full throttle the "valve" is horizontal, this means it begins to move way after 6mm.

Im in Uganda at the moment and this problem has been with me since Cape Town. On the advice of a friend I have put a #80 carb jet from a car into the pipe that joins the 2 carbs. I guess this acts as restrictor of fuel. This works well in that the splutter-cough problem at +4000rpm has gone. Trouble is that I dont have the extra power i need for sand as second carb is starving.
Any info would be appreciated!
Jim
__________________
"If we don't find something good at least we will find something new." Voltaire
Reply With Quote
  #2  
Old 18 Jun 2004
Registered Users
Veteran HUBBer
  
Join Date: Aug 2002
Location: Hendrik Ido Ambacht, Holland
Posts: 360
My advice is get everything back to standard. If your carb is not damaged or worn out this should work. Don't forget also to adjust the maximum opening of the 1st carb, this affects the butterfly opening of the 2nd too. If you get effects like too poor or too rich when firmly accelerating, adjust the needle of the 2nd. When you hear too much noise from the exhaust, it's too rich, when the bike doesn't accelerate immy, it's too lean.

------------------
Fred, XTZ660, Holland.
__________________
Fred, XTZ660, Holland.
Reply With Quote
  #3  
Old 20 Jun 2004
jim jim is offline
Gold Member
Veteran HUBBer
  
Join Date: Aug 2003
Location: Cape Town South Africa
Posts: 222
Thanks Fred
My Clymer Manual does not explain adjusting Primary carb... It makes sense that this is the problem. Can you or somebody explain teh procedure??
What setting is standard for the Needles?
THANKS!!
__________________
"If we don't find something good at least we will find something new." Voltaire
Reply With Quote
  #4  
Old 20 Jun 2004
jim jim is offline
Gold Member
Veteran HUBBer
  
Join Date: Aug 2003
Location: Cape Town South Africa
Posts: 222
Sorry, i lied, my manual does explain primary adjustment...
__________________
"If we don't find something good at least we will find something new." Voltaire
Reply With Quote
  #5  
Old 21 Jun 2004
Registered Users
Veteran HUBBer
  
Join Date: Jan 2001
Location: Stockholm
Posts: 651
Jim, Jim, Fred is right, the Yammie's are standard as good as they can be, so no advantage to be had from tricks.
Standard setting for the carbs; look in www.xt600.de, Vergaserspezial, at the bottom there is a link to a list of settings.
Re your splutter problem @ 4000 rpm, I had the same, after a lot of far more expensive things I just cleaned the air filter. Which helped. Remember, the intake is just above your rear wheel, the dustiest place in town. Cleaning of filter at least every two, in dusty conditions every day. Rinse in petrol three times, then lightly oil with engine oil.

Auke
__________________
Auke
http://aukemarieke.blogspot.com
Reply With Quote
  #6  
Old 21 Jun 2004
jim jim is offline
Gold Member
Veteran HUBBer
  
Join Date: Aug 2003
Location: Cape Town South Africa
Posts: 222
Thanks Auckeboss,
Every second day i curse you and your rule as i wash sticky filter oil from my hands!
Ive still got a spot of the real stuff (Yamaha Filter Oil), but when it finishes wouldn't I be better off using thick gear oil than regular engine oil?

Jim
PS Carbs are coming off soon to set back to std, hope it works!
__________________
"If we don't find something good at least we will find something new." Voltaire
Reply With Quote
  #7  
Old 22 Jun 2004
Registered Users
Veteran HUBBer
  
Join Date: Jan 2001
Location: Stockholm
Posts: 651
Good to hear people far, far away think of me all the time, or at least every two days.
Recommend just to use engine oil. You already have it with you, and it is sufficiently effective.

:-)
Auke
__________________
Auke
http://aukemarieke.blogspot.com
Reply With Quote
Reply

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 

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 On
Pingbacks are On
Refbacks are On

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now, and add your information if we didn't find you.

Next HU Eventscalendar

ALL Dates subject to change.

2025 Confirmed Events:

  • Virginia: April 24-27 2025
  • Queensland is back! May 2-4 2025
  • Germany Summer: May 29-June 1 2025
  • CanWest: July 10-13 2025
  • Switzerland: Date TBC
  • Ecuador: Date TBC
  • Romania: Date TBC
  • Austria: Sept. 11-14
  • California: September 18-21
  • France: September 19-21 2025
  • Germany Autumn: Oct 30-Nov 2 2025

Add yourself to the Updates List for each event!

Questions about an event? Ask here

See all event details

 
World's most listened to Adventure Motorbike Show!
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...

Adventurous Bikers – We've got all your Hygiene & Protection needs SORTED! Powdered Hair & Body Wash, Moisturising Cream Insect Repellent, and Moisturising Cream Sunscreen SPF50. ESSENTIAL | CONVENIENT | FUNCTIONAL.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)



Ripcord Rescue Travel Insurance.

Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.

Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.

Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!


 

What others say about HU...

"This site is the BIBLE for international bike travelers." Greg, Australia

"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK

"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia

"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA

"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada

"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa

"This is the answer to all my questions." Haydn, Australia

"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany

Lots more comments here!



Five books by Graham Field!

Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook

"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.



Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!

Your ad could be here, on EVERY page of the HUBB, or the whole website, or as many as you like!

New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.



All times are GMT +1. The time now is 02:44.

Contact Us - Horizons Unlimited Motorcycle Travellers Website - Archive - Privacy Statement - Top