Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
Xt 600 e 4PT -- weird noise Xt 600 e 4PT -- weird noise
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 Helmut Koch, Vivid sky with Northern Lights, Yukon, Canada

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


Photo by Helmut Koch,
Camping under Northern Lights,
Yukon, Canada



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 24 Feb 2017
Registered Users
New on the HUBB
  
Join Date: Feb 2017
Posts: 7
Xt 600 e 4PT -- weird noise
Here's the story so far, after a coil failure and replacement ,I heard a metalic clang/ping ,seemed to be coming from the right side of the cylinder barrel ( could be resonance from the fins ). The noise appears at around 2000rpm if the revs are brought up slowly ,or the choke has the engine running at that speed .
The pings seem to correspond with a slight hesitation in running which can just be detected in the exhaust note . No noise if the throttle is opened quickly ,at higher revs or on the overrun.
I had thought that maybe the coil failure had damaged the TCI unit and upset the advance around the 2/3000rpm range and was causing pre ignition ,so I swapped it with a known working unit ,no change .
Before the coil failure I heard no noise but this could be coincidence.
The bike rides fine ,it's jetted to suit the open airbox and after market silencer and will manage about 95 mph on a 16 tooth gearbox sprocket .
The bike starts fine if the air temp is 5deg C and above ,a bit difficult at lower temps but only after the coil failure ,before that it started fine at -10 deg C. 50,000kms on the odo ,uses a wee bit of oil .
Any suggestions before I dismantle it to check the piston and bore ?
Reply With Quote
  #2  
Old 24 Feb 2017
R.I.P. 25 November 2021
Veteran HUBBer
  
Join Date: Feb 2010
Posts: 688
http://www.horizonsunlimited.com/hub...eck-your-73934

Mezo.
Last edited by Mezo; 25 Feb 2017 at 01:21.
Reply With Quote
  #3  
Old 24 Feb 2017
Bobmech's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Sep 2008
Location: BOP , New Zealand
Posts: 184
I couldn't get Mezo's link to work, but here is another link
http://www.horizonsunlimited.com/hub...eck-your-73934

Make sure you check both the crankshaft keyway and the adjacent balance shaft keyway.

Bob
__________________
Remember that Assumption is the mother of all f**k-ups.
Reply With Quote
  #4  
Old 26 Feb 2017
Registered Users
New on the HUBB
  
Join Date: Feb 2017
Posts: 7
is this really that bad ?
[IMG][/IMG]
[IMG][/IMG]

This is the key out of the crankshaft ,the nut wasn't very tight ,awaiting a clutch holding tool before dismantling the balancing shaft ( left hand thread ? )
Could this really have caused the noise ?
Assumption ,Bobmech, damn right , I was assuming the fault was related to the coil failure .
Last edited by Wee Ginger dog; 27 Feb 2017 at 20:16.
Reply With Quote
  #5  
Old 1 Mar 2017
Registered Users
New on the HUBB
  
Join Date: Feb 2017
Posts: 7
Key play and rattly noise /
Having taken off the clutch and drive pinions ,I can point out ,that the big key that gets the hammer is the crankshaft pinion key . The balance shaft key is tiny by comparison ,also the crank nut if torqued to 85 ft/lb ,the balancer to 43 and the clutch to 65 .Just puts into proportion load .
I filed down 7mmx8mm key steel ( a common size in engineering )to 7x7.1mm. I arrived at the 7.1 width after starting at 7.25 and filing down to a snug fit ,tells me the crank keyway is a little worn . No idea if this cures the noise ,still waiting for new tab washers before putting it all back together and trying it .
THE BALANCE SHAFT NUT IS NOT LEFT HAND THREAD ,in spite of the marks on the nut flats that either indicate unf or left hand thread as in fuel gas unions .
Reply With Quote
  #6  
Old 4 Mar 2017
Registered Users
Veteran HUBBer
  
Join Date: Feb 2012
Location: Milan, Italy
Posts: 562
that would be an ok key in my book.
for whatever it's worth,in the only motor i opened that had a sheared key, it was the balancer shaft one.
if there's on ething i would check is that the rotor (and therefore ign. timing) has not sheared the key.... easy to verify
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
XT600E Service Manual Download kentfallen Yamaha Tech 86 24 May 2023 09:10
XT600 - Model Codes kentfallen Yamaha Tech 27 3 Aug 2019 16:36
XT600 Parts Manuals (1990 - 2002) kentfallen Yamaha Tech 5 29 Jul 2016 11:13
XT 600 4pt / Fenders ? Mako140 Yamaha Tech 9 7 Feb 2014 12:48
xt 600 E engine noise claxby Yamaha Tech 4 21 Jul 2013 13:00

 
 

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

HU Event and other updates on the HUBB Forum "Traveller's Advisories" thread.
ALL Dates subject to change.

2024:

Add yourself to the Updates List for each event!

Questions about an event? Ask here

HUBBUK: info

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...

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 13:26.

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