Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
hesitation 1990 xt 600 hesitation 1990 xt 600
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 Alessio Corradini, on the Salar de Uyuni, Bolivia, of two locals

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


Photo by Alessio Corradini,
on the Salar de Uyuni, Bolivia,
of two locals



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 31 May 2013
Registered Users
Veteran HUBBer
  
Join Date: Mar 2013
Location: nj usa
Posts: 170
hesitation 1990 xt 600
the bike runs great but she hesitates when crusing in second thirdc gear but when the give her full throttle she takes off with no hesitation at all she pulls great. I did rebulid carbs intakes gaskets orings etc. Any help would be apprecited, also air mixture how do you do it with out burning fingers and space is there a tool you use from yamaha?
Reply With Quote
  #2  
Old 31 May 2013
Registered Users
HUBB regular
  
Join Date: Nov 2008
Location: Cardiff
Posts: 71
Weird I was going to ask pretty much the same question. My 03 600 E , in 2nd an 3rd feels like , when being held at a steady constant throttle, like it is going into the point wherethe bike is going to start to run out of fuel. Bang the throttle open and it pulls strong.
I have also noticed the bike smells very fuelly on start up but that could be just the choke I guess.
It also still has good mpg I think at 58mpg

Sent from my GT-I9100 using Tapatalk 2
Reply With Quote
  #3  
Old 1 Jun 2013
Registered Users
Veteran HUBBer
  
Join Date: Mar 2013
Location: nj usa
Posts: 170
Now I don't get fuel smell. Hopefully somebody will chime in.
Reply With Quote
  #4  
Old 1 Jun 2013
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
Yep that's one of the things my '88 is doing. Misses or acts like it is running out of gas, but runs perfect under acceleration. I have a set of Raptor660 atv Mikuni carbs that I am installing on mine( actually able to get parts for them and can adjust them easily). They bolt right on to the factory boot, need the atv airbox to carb boots and a motion pro twist throttle with cable. Just have to figure out jetting, hope it fixes the miss.
Reply With Quote
  #5  
Old 1 Jun 2013
Registered Users
Veteran HUBBer
  
Join Date: Mar 2013
Location: nj usa
Posts: 170
Any help what to do with these carbs or suggestions to look for in the carbs
Reply With Quote
  #6  
Old 1 Jun 2013
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
The factory dual carbs need to be synced perfectly to start with (at least the ones on my 88) they did change some through the years though. The fuel mixture screw is the one area that with the atv carbs, I will have actual knobs to adjust easlily plus all possible sizes of jet(pilots and main)and multiple needle sizes/tapers and height adjustment that the factory doesn't. The needles control mid range.
The studdering I believe is from to much or surges of gas coming from the second carb but not the air to go with it , until you give it gas and open the second slide.
If you have a service manual, go through the syncing(timing of when the second carbs adds gas), there is just limited jets available and less adjustment options to fine tune them better. The newer models may be better than my older ones though.
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Yamaha XT 600 personalization Zergman Yamaha Tech 181 7 Aug 2024 17:56
1990 XT 600 Kickstarter zcarter Yamaha Tech 5 23 Mar 2012 21:52
Transalp 600 to KLE rlkat Kawasaki Tech 3 21 Dec 2011 15:00

 
 

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.

2024:

  • California: April 18-21
  • Virginia: April 25-28
  • Germany Summer: May 9-12
  • Québec: May 17-19
  • Bulgaria Mini: July 5-7
  • CanWest: July 11-14
  • Switzerland: August 15-18
  • Ecuador: August 23-25
  • Romania: August 30-Sept 1
  • Austria: September 12-15
  • France: September 20-22
  • Germany Autumn: Oct 31-Nov 3

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. 11-15
  • 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 13:16.

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