Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
XTZ 660 Cutting out when warm XTZ 660 Cutting out when warm
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 Jan 2010
Registered Users
New on the HUBB
  
Join Date: Jan 2010
Location: Manchester UK
Posts: 3
XTZ 660 Cutting out when warm
Can anyone offer advice on where to start looking to solve this problem?

XTZ 660 1992.
The bike generally runs well.
However, i keep having the same problem that has developed recently -

The bike starts fine and runs for about 5 minutes or so (or about 2-3 miles) when it simply stops.

The fuel supply is fine and there's plenty of life in the battery but it simply will not fire up.
The engine is not overheating either.

Once cold again (leave it for a couple of hours) and the bike will start and the same the same thing happens all over again.

I have the full workshop manual and have tested the coil which gives all the proper readings.

Otherwise, I'm stumped!

Can anyone offer any advice on what to look at next?

Thanks
Mike
Reply With Quote
  #2  
Old 18 Jan 2010
Registered Users
Veteran HUBBer
  
Join Date: Dec 2008
Location: Denmark
Posts: 1,417
Have you checked the coil and stuff like that just when the bike has cut out and is still warm?

I've heard stories like theese before, I think it's because the ressistance builds up when the things get warm. When cold, theyr're still within spec.
Reply With Quote
  #3  
Old 18 Jan 2010
Registered Users
Veteran HUBBer
  
Join Date: Jan 2010
Location: Essex
Posts: 178
check the tank can breath. try opening the fuel cap when it cuts out if you get a hiss sound the there is a vacuum forming in the tank which stops fuel flow had this on a bike a few months back.
__________________
Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do.
Reply With Quote
  #4  
Old 18 Jan 2010
Registered Users
New on the HUBB
  
Join Date: Jan 2010
Location: Manchester UK
Posts: 3
Thanks for the advice

I don't think it's a petrol vacuum problem (although I'd never have thought of this).

When it stopped (yesterday) I checked the tank by looking in it and it still wouldn't start.

I'm goint to strip it down tonight, clean everything and take it from there.

do you know if there is there any way of testing the coil on the bench?
Reply With Quote
  #5  
Old 18 Jan 2010
Registered Users
HUBB regular
  
Join Date: Dec 2007
Posts: 36
Hi Mike,

If your sure the fuel supply is fine, I would look at the ignition coil. You could check the resistence cold but as it starts the bike when cold this will probably proove to be all well. Checking the resistence when hot should give you some idea as to if this is the fault, although in my experience the time you get to the coil to test it has usually cooled down. A borrowed coil is quite often the best test. Without seeing the bike it sounds very like the ignition coil is breaking down when hot.

Good luck and let us know how you get on.

Cheers Sam.
Reply With Quote
  #6  
Old 19 Jan 2010
Champ's Avatar
Contributing Member
HUBB regular
  
Join Date: Apr 2009
Location: Beenleigh Qld Australia
Posts: 44
Hi Mike.
The guys seem to have summed things up and can be confirmed by Google,ing

XTZ660 cuts out when warm and won't restart - Yamaha Owners Club

Hope this solves your problem but I think the guys on site have their finger on the pulse
Kind regards
Champ
Reply With Quote
  #7  
Old 19 Jan 2010
*Touring Ted*'s Avatar
Contributing Member
Veteran HUBBer
  
Join Date: Jul 2005
Location: Wirral, England.
Posts: 5,673
Does the choke have any effect.... ??

Maybe its stuck on but unlikely being the plunger type..

HMMMMMM !!

You say you've checked valves and its not vacumn starved either..

Coils can be funny buggers at temperature as can other electricals !

You need to be checking for a good clean spark while the engine is nice and hot (easier said than done I know).

I take it the plug is the book spec too.


How do you know the fuel supply is fine ?? When it cuts out, immeiately try and drain the carb bowl with the drain screw and see that it's full..

Often the bowl can empty and it will trickle fill again and restart in a few mins or hours...
__________________
Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.
Reply With Quote
  #8  
Old 19 Jan 2010
Registered Users
Veteran HUBBer
  
Join Date: Jan 2009
Location: Cambridge UK
Posts: 107
Not sure if it can cause these symptoms but the rectifier is a known weakness on these. Mine has been replaced on my `91 model which I have owned for a year.
__________________
This old world keeps spinning round, it`s a wonder tall trees ain`t laying down.
Reply With Quote
  #9  
Old 19 Jan 2010
Registered Users
Veteran HUBBer
  
Join Date: Aug 2009
Location: Dorset UK
Posts: 395
What with all this damp/salty weather you wanna check ALL the electrical connections linked to the ignition & coils.



A corroded terminal block or connectors could easily cause an intermittent fault, mis-fire, cutting out


Undo all blocks/connectors and check for corrosion & tight fit. Check loom as you go for splits, damage or snagged/bare wires.

Reply With Quote
  #10  
Old 19 Jan 2010
BlackDogZulu's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Oct 2008
Location: West Wales, UK
Posts: 753
I'm pretty sure your answer is up there ^^^ somewhere.

I would tackle it in this order:

Ride with the filler cap off to check no tank vacuum (costs nothing)
Check float valve is not sticking and any filters in carb are clean (ditto)
Swap coil with known good one.

My money's on the coil. The symptoms are identical to when I had one go funny on me (in a Land Rover, but same principle). Works 100% when cold, but fails totally when hot. A new one won't break the bank.

The symptoms all point to either heat or a fuel system that can't keep up with demand. The rectifier is unlikely to be the culprit as it is well away from any hot things (well, mine is, 3TB).
__________________
2006 XT660R daily ride, 1994 XT600E about to be reborn, Blog: http://goingfastgettingnowhere.blogspot.com/
Reply With Quote
  #11  
Old 19 Jan 2010
Registered Users
HUBB regular
  
Join Date: Dec 2005
Location: Simonstone, Lancashire, England
Posts: 63
I also feel it will be a faulty coil, I had exactly the same about 15 years ago on a 1 year old GasGas trials bike.
The dealer said there was water in the windings.

My son had the same problem with a Beta-Zero, and that turned out to be the fuel tank breather pipe was crushed and causing a vacuum, but you have covered that
Whilst rectifiers commonly fail, I don't think they will stop it running unless the battery flattens
__________________
Take care out there
Brian

Britch's Holidays Dreaming of the BIG one :-)
Reply With Quote
  #12  
Old 20 Jan 2010
bacardi23's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,544
Flat battery due to bad reg/rectifier won't cause the bike to die trust me! lol

any of the other solutions seem plausible... check'em!
anything give us a shout!


Vando
Reply With Quote
  #13  
Old 27 Jan 2010
Registered Users
New on the HUBB
  
Join Date: Jan 2010
Location: Manchester UK
Posts: 3
Miracle Cure
OK guys, thanks for all the advice.

Having run the bike for a few days now, the problem seems to have miraculously vanished.

I stripped the main components of the electrics (coil, battery, etc) and basically gave everything a damn good clean

Checked the plug & cleaned it too (although I'd already done this a week a
ago)

Hey Presto!

still don't know what the original problem was but it seems to have disapeared now

Thanks again to the help in the biking world

Mike (A happy big trailie commuter)
Reply With Quote
  #14  
Old 27 Jan 2010
bacardi23's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,544
Probably just some bad connections....


Vando
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
1984 Yamaha XT 600 high RPM sutter/cutting out!! Linkster Yamaha Tech 6 30 May 2009 17:22
1200GS cutting out Tim Cullis BMW Tech 8 17 Jul 2008 14:56
How little can you get away with ? Cutting Down stuxtttr Camping Equipment and all Clothing 6 11 Jun 2008 23:22
2001 F650 - Cutting out problem (HELP!) GregM BMW Tech 3 15 May 2005 06:52

 
 

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 08:57.

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