Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
3AJ RUNNING TOO RICH? 3AJ RUNNING TOO RICH?
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 Hendi Kaf, in Cambodia

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


Photo by Hendi Kaf,
in Cambodia



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 7 Dec 2005
big t's Avatar
Registered Users
HUBB regular
  
Join Date: Aug 2005
Location: northern ireland
Posts: 89
3AJ RUNNING TOO RICH?
HI everyone, Having just rebuilt my 3aj engine,ive found that when i replaced the air filter the bike backfires and then splutters to a halt.when i remove the filter it runs fine,but having just rebuilt it i dont want it running without an air filter. the manual states that the pilot air screw is fixed behind a blind housing and removal is not recommended!! any sugestions please. p.s can anyone recommend a good air filter for a 3aj? thanks T.
__________________
big T
Reply With Quote
  #2  
Old 7 Dec 2005
Registered Users
HUBB regular
  
Join Date: Apr 2004
Location: london england
Posts: 56
I think you just answered your own question there big t. You've got the wrong type of air filter fitted, it's to dence. give your local yam shop a call and they'll point you in the right direction, Haven't bought my new one yet so can't help. i am getting a foam one though so i can clean it out and re-use it.
Reply With Quote
  #3  
Old 8 Dec 2005
Registered Users
Veteran HUBBer
  
Join Date: Jan 2001
Location: Stockholm
Posts: 651
Did you put in a new standard one, which is oiled foam. If so, you must have oiled it yourself and put in far too much oil.
Soaking it in oil you should squeeze it out till there is no oil coming from the foam anymore.

The pilot air screw: with carb wear you want a ricger idle mixture. Just remove the little alu cover plate and screw out for richer mix, screw in for leaner mix. Don't brun your fingers, I find a little flat screwdriver bit the best tool not having an around-the-corner screwdriver.

BTW: ar eyou sure that after your overhaul sufficient petrol reached the float chamber? Check by opening the little drain plug on the bottom of the float bowl. If petrol runs out you are OK.

Auke

__________________
Auke
http://aukemarieke.blogspot.com
Reply With Quote
  #4  
Old 8 Dec 2005
big t's Avatar
Registered Users
HUBB regular
  
Join Date: Aug 2005
Location: northern ireland
Posts: 89
hi, the previous owner had a home made filter in there, just a piece of foam cable tied onto the filter housing! i replaced the inlet rubbers and was thinking if they had been leaking, had the previous owner richened the mixture to componsate. thanks for the replies,i will try some experimenting. T.
__________________
big T
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

25 years of HU Events
Be sure to join us for this huge milestone!

ALL Dates subject to change.

2025 Confirmed Events:

Virginia: April 24-27
Queensland is back! May 2-5
Ecuador June 13-15
Germany Summer: May 29-June 1
CanWest: July 10-13
Switzerland: Date TBC
Ecuador: Date TBC
Romania: Date TBC
Austria: Sept. 11-14
California: September 18-21
France: September 19-21
Germany Autumn: Oct 30-Nov 2

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 01:55.

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