![Reply](https://www.horizonsunlimited.com/hubb/images/buttons/reply.gif) |
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
19 Mar 2006
|
![big t's Avatar](https://www.horizonsunlimited.com/hubb/images/avatars/Avatar022.gif) |
Registered Users
HUBB regular
|
|
Join Date: Aug 2005
Location: northern ireland
Posts: 89
|
|
smoke, rattle and roll !!!
hi, when i start my 3aj after sitting for a day, firstly it starts fine,runs quiet then after 30 sec plumes of blue smoke pumps from exhaust, after 2 mins a rattle appears somewhere at the right hand side of the engine!! engine has had new side bearings,rings,valve seals camchain & carb rubbers fitted. runs fine(no smoke) when its warmed up but still rattles. anyone got an idea on this before i pull her down?? cheers T
[This message has been edited by big t (edited 19 March 2006).]
__________________
big T
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
20 Mar 2006
|
Registered Users
Veteran HUBBer
|
|
Join Date: Aug 2004
Location: dublin
Posts: 101
|
|
Hi Big T,
I just rebuild my engine recently, bearing, cam chain+ piston ring after 55000km
Had a bad oil leak towards what I thought was the cylinder gasket, so opened the engine again change the gasket...
The leaks remained, then I thought it was the clutch cover gasket ...
Eventually a friend came along and within 5 minutes saw that the leak was actually coming from the other side of the engine..
I forgot to put back one small screw...
If only I took the time to really check the leaks I wouldn't have waisted this time searching and fixing the wrong part...
From my view if there is smoke there is probably some oil left in the cylinder head
So I think one possibility would be that the piston ring don't do their work properly, as it can be tricky to put them back.
So I was thinking maybe you did not adjust each ring with the right angle allowing the oil to filter through.Especially if your bike has a certain mileage the cylinder get used irregularly on its surface.
For the noise I experienced also a noise after the rebuild, I found that I adjusted the timing chain correctly but then did not use the right torque and the bolts were getting lose...
The lesson I learnt is that those engine are quite basic so if something does not run properly it probably comes from one own inexperience and mistakes...
Hope my modest experience will help...
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
20 Mar 2006
|
![big t's Avatar](https://www.horizonsunlimited.com/hubb/images/avatars/Avatar022.gif) |
Registered Users
HUBB regular
|
|
Join Date: Aug 2005
Location: northern ireland
Posts: 89
|
|
hi Gwel, the rings were lined up as the manual says, and the tensioner is fine. theres a small rubber seal between the barrel & head,im wondering could this have failed & be letting oil into the bore?? as for the rattle i,m beat!! any more help or suggestions please? T
__________________
big T
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
17 Apr 2006
|
![mini_s_man's Avatar](https://www.horizonsunlimited.com/hubb/images/avatars/Avatar070.gif) |
Registered Users
New on the HUBB
|
|
Join Date: Apr 2006
Location: Ballina, NSW, Australia
Posts: 9
|
|
I am actually considering a little bit of top end on mine aswell because of similar reasons.
approx. 2 out of 10 cold starts she blows smoke (not blue just solid white with a feint odour)
In talking to other mechanically minded people i think my problem, is a worn valve guide, so that when oil is up top there it can run down the valve shaft and there is a couple of ml of oil sitting on the valve waiting for me to fire it up so that this oil can enter the chamber to burn with the fuel/air. This also indicates its likely to be happening only when i stop the engine on tdc (when all the valves are shut) otherwise the oil would prob just run down over the rings.
as for noises i am playing ignorant, they clear up after a minute for me, so i just think the oil is taking a bit to get up the top.
__________________
----------------------------------------
Yamaha XT600 1988
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
18 Apr 2006
|
![big t's Avatar](https://www.horizonsunlimited.com/hubb/images/avatars/Avatar022.gif) |
Registered Users
HUBB regular
|
|
Join Date: Aug 2005
Location: northern ireland
Posts: 89
|
|
well took the head & barrel off today, some oil lying on top of the piston. it seems to be entering the bore at the camchain side, so maybe just a blown gasket? still can,t figure out whats making the rattling noise or why it doesn,t appear until after two minutes? gonna remove the r.h. side casing and check the big nut at the end of the crank as i seem to remember reading on another thread about this coming loose. any more ideas still welcomed thanks T
__________________
big T
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
18 Apr 2006
|
![wonky's Avatar](https://www.horizonsunlimited.com/hubb/customavatars/avatar15504_2.gif) |
Gold Member
Veteran HUBBer
|
|
Join Date: Mar 2005
Location: Leeds, West Yorkshire, England
Posts: 100
|
|
I had the same thing as mini-s-man, ie. lots of smoke every few starts and a bit of a rattley noise which goes in a few mins(on my tt600r).
Had someone more mechanically minded than me look at if after 50,000kms. He gave it a piston and rings, new camchain and tensioner and a new set of valve stem seals. Apparently the seals were v-shagged and caused most of the oil smoke and a bit of a rattle.
Did you change them?
The big nut at the end of the balance shaft is the problem one, not the crank, i think(stuck the bugger on with bearing loctite whatever). Apparently it makes a very scary noise which you will not mistake with a bit of a rattle.....
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
18 Apr 2006
|
![big t's Avatar](https://www.horizonsunlimited.com/hubb/images/avatars/Avatar022.gif) |
Registered Users
HUBB regular
|
|
Join Date: Aug 2005
Location: northern ireland
Posts: 89
|
|
valve seals were replaced, piston rings also. this noise only appears two minutes after starting from cold, so could it be somehow heat related? will investigate deeper tmw. T
__________________
big T
|
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
HTML code is Off
|
|
|
|
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.
"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.](/stuff/ripcord/ripcord-logo-250.jpg)
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!](/stuff/grahamfield/graham-field-2021-280.jpg)
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!
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.
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.
|
|
|