Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
Can you diagnose this? Can you diagnose this?
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
Page 1 of 2 1 2
 
LinkBack Thread Tools Display Modes
  #1  
Old 27 Mar 2010
Registered Users
HUBB regular
  
Join Date: Apr 2008
Location: Alesund, Norway
Posts: 53
Can you diagnose this?
Im trying to find out what it wrong with my xt600z, so I have recorded 12sec of sound. Its .mov, quicktime, so I hope you can hear it and maby tell me what it is? Some knocking. I think it has a Wiseco piston, and some say it will make some noise, but that it is harmless..

Now lets just see if Im able to post the file...

Well, finally converted it to mp3...Tenere sound.mp3.zip
Last edited by Osmund; 27 Mar 2010 at 21:37. Reason: better format on file
Reply With Quote
  #2  
Old 27 Mar 2010
bacardi23's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,544
Could you post in another format? mp3 or even wave...
Reply With Quote
  #3  
Old 27 Mar 2010
Registered Users
HUBB regular
  
Join Date: Apr 2008
Location: Alesund, Norway
Posts: 53
Believe me, Ive tried... even downloaded new program to convert the file, but no, couldnt do it..."Unable to open" it said.. Tried to post it via youtube too, but all I got was an error message.. It works fine with Quicktime, so I dont know why it cant be converted...
Reply With Quote
  #4  
Old 27 Mar 2010
bacardi23's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,544
afterall VLC media player plays quicktime!
I'll hear the clip a few times and I'll post back if I think of something!
Reply With Quote
  #5  
Old 27 Mar 2010
bacardi23's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,544
Mate.. I believe you have a little work to do on that engine... it could be a few things.

I don't want to say anything bcoz I am not sure and don't want you to get paranoid....

What I would do is:

check your engine compression(it should give you an idea on the state of your piston and piston rings)
check the valves gaps and camshaft chain

but that noise.... it sounds like a bad crank bearing or some loose nut inside the engine....

I suggest you to check everything first and not ride the bike at all...



Vando
Reply With Quote
  #6  
Old 27 Mar 2010
Registered Users
HUBB regular
  
Join Date: Apr 2008
Location: Alesund, Norway
Posts: 53
Well its been like that since I got it, and Ive driven 2-3000km on it... sounds a bit worse on the pc I guess.. I had my Iphone close to the cylinder when I recorded it. Sounds like it comes from the top end..
Reply With Quote
  #7  
Old 27 Mar 2010
bacardi23's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,544
Oh... now that explains a few things lol...

do the compression test and after that check the valve clearances!

How many miles or km does the bike have?
Reply With Quote
  #8  
Old 27 Mar 2010
Registered Users
Veteran HUBBer
  
Join Date: Aug 2009
Location: Dorset UK
Posts: 395
Thats a KNOCK more than anything.

Does it go away when "blipping" the throttle? More or less when under load?

Loose counter balancer?
Reply With Quote
  #9  
Old 27 Mar 2010
Registered Users
HUBB regular
  
Join Date: Apr 2008
Location: Alesund, Norway
Posts: 53
It only has 30000 km on it..
The knocking is not so bad when I twist the throttle and put pressure on the engine
Reply With Quote
  #10  
Old 27 Mar 2010
wolfzero's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2009
Location: uk
Posts: 434
little end bearing is no good causing the piston skirt to scrape the barrel
top end rebuild at least depending on how long and what oil contamination has done to the rest of the engine
__________________
XT 630 SUPERMOTO

GSXR750L KMX200

RF900 & GSX400X Impulse Projects
3.9 V8 Rangerover
Reply With Quote
  #11  
Old 28 Mar 2010
Registered Users
HUBB regular
  
Join Date: Apr 2008
Location: Alesund, Norway
Posts: 53
Hmm, thats no good I guess... Whats the "little end bearing"? Sounds like a lot of work. Never done that before. Well Ill better hit the garage and start. Is there any good online descriptions on how to do the top end? Preferably with pics?
Reply With Quote
  #12  
Old 28 Mar 2010
Registered Users
Veteran HUBBer
  
Join Date: Aug 2009
Location: Dorset UK
Posts: 395
Quote:
Originally Posted by Osmund View Post
Hmm, thats no good I guess... Whats the "little end bearing"? Sounds like a lot of work. Never done that before. Well Ill better hit the garage and start. Is there any good online descriptions on how to do the top end? Preferably with pics?
Little end is the Gudgeon pin or wrist pin that hold the piston to the conrod - connected to the, crank shaft


Not sure its that, especially if it goes away when loaded ?

Yep, you best take the head off and investigate
Reply With Quote
  #13  
Old 28 Mar 2010
Big Yellow Tractor's Avatar
Contributing Member
Veteran HUBBer
  
Join Date: Jan 2008
Location: England
Posts: 649
Difficult to diagnose without hearing it from different areas of engine using either the "long screwdriver with the handle in your ear" method or if you're posh, a stethescope(sp?).

Does the noise diminish or increase once the engine is warm ? or when under load ?

I would make sure your valve clearances are within tolerance as a first step but as said by others I would suspect piston slap. Should get away with a cylinder hone, new piston and rings and small-end bearing.
Reply With Quote
  #14  
Old 28 Mar 2010
Registered Users
HUBB regular
  
Join Date: Apr 2008
Location: Alesund, Norway
Posts: 53
Well now Ive started to take it apart. Checked the valve clearanses; loose 0.10mm on exhaust, bit tight on intake so I adjusted to a tight 0.10mm.
I have a Clymer for the XT, so Im going for it.. more work than I thought, lowering the engine to get the top off, and its all so #¤% TIGHT...
Ill keep you informed on the progress, and thank you all for good help :-)
Reply With Quote
  #15  
Old 28 Mar 2010
AliBaba's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Apr 2001
Location: Norway
Posts: 1,379
Quote:
Originally Posted by Osmund View Post
Hmm, thats no good I guess... Whats the "little end bearing"?
Det runde lageret (foringen) som er presset inn i enden av råden (mot stemplet). Pinnebolten (wrist pin) går gjennom stemplet og gjennom lageret og fester dermed stempelet til råden.

For å sjekke slakk må du ta av stemplet, sette pinnebolten tilbake i råden og kjenne om det er slakk. Ofte kan det være pinnebolten som er skadet, den kan få en lett timeglassfasong.

Skal du av med toppen er det ikke mye ekstra jobb å skjekke dette,
Reply With Quote
Reply
Page 1 of 2 1 2

« 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
Diagnose this engine knock... olas altas Yamaha Tech 4 30 Apr 2009 21:22
Please help me diagnose Sparkdaddy Yamaha Tech 6 12 Jul 2007 17:55
Help me methodically diagnose a rattle... electric!sheep Yamaha Tech 13 29 Jul 2006 06:53

 
 

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 18:10.

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