Post by anon on Jan 31, 2007 21:08:16 GMT
From: rowlf Sent: 10/09/2002
Information and fix kindly posted by 'stump'
--------------------------------------------------------------------------------
I had this problem, and was leaving really large nasty brown stains everywhere I parked (sounds socially unacceptable, doesn't it boys and girls?)
Anyway - I went to my local garage, the 2 Wheel Centre in Inverurie and asked if they knew any reason why a 1996 P reg 600 Diversion S would leak gunk all over the place, and they immediately told me it was a problem with the oil cooler adapter, which was corrected in 1998-onwards models, and absent in pre 1996 models as they had no cooler.
Apparently the problem lies in the sealing gaskets for the oil pump and filter - water can get in through it and end up in emulsified oil. This, being lighter (I think) than normal oil ends up in the airbox, where it clogs your filter, drains out the hose, and leaves those embarrassing stains.
Now, I am no bike mechanic, but a passing knowledge (i.e taking the fuel tank off and having a look in the airbox) reveals no direct connection to the oil cooler assembly, so I have no idea how the gunk can end up in there in the first place.
However, there IS a £10 fix kit available from the 2 Wheel Centre (now based in Aberdeen, address is:)
Two Wheel Centre
251-253, Great Northern Rd
Aberdeen Aberdeenshire AB24 2AB
Tel: 01224 481111
I had this put on a few months ago, and have noticed absolutely no difference in the appearance of the oil filter or it's adapter plate (not having a belly pan, and with roads the way they are here, that part gets covered in thick cow carp anyway) - but it HAS stopped leaking - even after early morning runs in cold weather when it was worst. Only bad side I've noticed is that the engine makes a louder "ticking" sound when first started.
From: geester1973 Sent: 09/09/2003
Had the same problem of oil leaking out of the air filter beather pipe every time i stopped the bike .Found the problem to be that I had put too much oil additive into the engine , so I drained some out and cleaned up the air filterbox and breather pipes and the problem was solved. The reason why I was putting oil additive into the engine was because ever since I did a valve job on the bike one cold winter and left the valve cover off the engine over night I got a yellow creamy subtance in the oil which didn't seem to effect the engine but was a nightmare when it came to oil changes as you couldn't see the oil level in the window. I changed the oil countless times , took it on long runs and even had a garage take off the clucth cover to clean the window which worked for about one week. Apparently it is a commom problem on divvey's according to my local garage (has anyone else had the same problem ?) , maybe because they couldn't fix it .Anyway after 2 years of this a work mate recommended STD ENGINE ADDITIVE from halfords which did the trick , so I now add it at every oil change ,also it seems to cut down the engine nosie.The bike in question is a 1997 P reg XJ600N.
Hope this has been some help Geester.
From: stedivvie Sent: 22/10/2003
Mines a 98 600s and you wont believe the amount of muck she dumps on the path, I have had to strip the air filter box down every couple of weeks to stop it, call me thick but what are these additives your adding when doing an oil change?? and should I be adding them to mine?
From: Richardhamble1 Sent: 25/11/2003
My p reg xj600s has the same problem.
Does it make any difference if you park it on the centre stand rather than side stand?
From: stedivvie Sent: 03/12/2003
No it doesn't I actually took all the pipes off and gave them a thorough cleaning and touch wood I haven't had a leak since, I also bought the kit from Scotland but have resisted in fitting it yet.
From: Richardhamble1 Sent: 15/01/2004
I phoned Aberdeen and the guy has been inundated. He said I could get the modification from the local Y dealer.
I tried but they dont even know about the problem let alone have a modification. No could accuse Yamaha of being in touch with their customers.
I have sent them some transcripts of our messages so they can respond.
From: stevef Sent: 26/01/2004
Not sure whereabouts you are but Woodford Motorcycles in South Woodford,
North East London knew all about this and sorted it out for me in days.
Tell your dealer to talk to Yamaha technical, they'll provide all the
info & parts required.
--
Steve Fitzgerald has now left the building,
you will find him in London's Docklands, E16, UK
From: Nick_nnname Sent: 07/02/2004
I've got the same problem i.e. a leak caused by oil getting into the airbox via the crankcase breather and then dripping out of a drain hole onto the engine, the floor, the legs of my waterproofs etc. However my Divvy is a '95 pre oil cooler model. But the problem does appear to be caused by 'frothy' oil. A certain amount of moisture is likely to collect in the engine during wet weather, but it would normally be 'burnt off' on any but the shortest of runs and the oil should cope OK. In my case the problem has only occurred this winter after I changed the oil and re-filled with Halford cheapest mineral motorcycle oil so I suspect the oil is not up to the job. I'll be changing it to a better quality semi-synthetic this weekend so I'll give it a week to see if it's problem solved and post my findings.
From: Nick_nnname Sent: 22/02/2004
Have now changed the oil in my '95 pre oil cooler Divvy from Halfords mineral motorcycle oil back to Silkolene 'Super 4' mineral oil, which I had always used previously. Early days still, but it does look as though the problem has been cured.
From: elmerphudd Sent: 23/02/2004
I had the same problem took it to local shop who put it down to the fact i was using Castrol Magnatec, said it was wrong make up regards molecules and the like.Recommended Rock Motorcycle oil and the problem has dissappeared
From: Richardhamble1 Sent: 26/03/2004
I fitted the Yamaha modification kit (£13) part no. : 90891-10113. about a month ago and the problem is resolved.
An eminent mechanic says- the bikes were not originally designed for the british climate so they eventually devised this replacement breather arrangement for the pre-99 models.
I did find the problem more prevalent when I parked on the side stand.
From: Richyw8 Sent: 20/04/2004
What does the kit consist of and is it easy to fit ?
Mine has started to dump the oil big style so desperate to try and get it sorted.
Richy
From: kwik Sent: 03/05/2004
mine has the same problem, but i have a 92 divi which is a pre oil cooler model, does that mean its not worth worth getting the kit? i put it down to one of the breathers being blocked, could this be the case? i cleaned the airbox out and within a week it was flowing like gravy. i am so suprised that so many of you have this same problem. as a temp fix i passed a piece of fishtank airline from overflow hole on bottom of box down to sidestand so i can place a piece of rag under it untill i get the chance to look at it some more. ps, centrestand just helps box collect more oil.
From: TJ63 Sent: 04/05/2004
I would think it would be a waste of time and money buying the kit. Check all the breather hoses - I'm sure you'll find that one of them is blocked.
Filthy horrible job, but worth doing.
Trevor
From: gurninman Sent: 04/05/2004
I've found the easiest way to clear the breather hoses is:
1.detach the breather hose from the cam cover, and also the large one from the crankcase.
2.Place a big wad of rag or tissue at the end of the large breather pipe (don't press it hard , just hold it loosely over the end).
3.Give the small hose a blast with compressed air, catching all the snot in the aforementioned rag.
Put the breather hoses back on - job done.
You can blow them through with a footpump - use the attachment for blowing up pvc toys, it fits perfectly in the breather hose.
Dave
From: cidered666 Sent: 25/06/2006
Having had a similar problem on my 600n. I have blown through the pipe from the crankcase removing a large blob of a jizz-like substance (yuck!!)
What I don't understand is how the hell oil gets from the crankcase to the airbox
From: frenchy36 Sent: 27/06/2006
Hello,
my garage told me this is caused by worn piston seals (or rings?) that cause oil to be pushed up into the air box. They tested the compression on the engine and it was found to be acceptable. If it is OK, then does not this discount the possibility of oil being pushed up because of piston seals?
By the way, the problem seems to be made worse if you add too much oil. My bike has enough oil but for the first 2 to 3 miles after starting it up, the "not enough oil" sign is switched on. This is apparently not a problem...
From: ©Doofer Sent: 27/06/2006
Frenchy,
They are both classic signs of owning a 600 divvy
The oil light seems to become oversensitive very quickly, so long as there is enough oil and you check it regularly I wouldn't worry.
Emulsified oil dripping from the airbox breather is common too, especially on damp or humid weather, however giving the airbox and the pipe a good clean out and making sure they are routed so they have no kinks or pinches seems to help. (took me several attempts at cleaning mine out to sort it, last time I discovered a slighly pinched pipe, seems to have been fine since, but I'll wait for the cold weather before saying its completely fixed)
Clutch rattles and vibrations through the handlebars are also divvy traits, nothing to worry about unless it gets bad, but there are things you can do to help ease them depending on how mechanically minded you or your friends are.
If you ever take the fairing off the bike (assuming its an s model) you will proabaly find youself loosening and tightening the bolts in a different sequence every couple of days until you finally stop the thing rattling, or fitting bits of foam or rubber to the mounts to dampen the vibrations.
They all do it, some worse than others, usually nothing to worry about, but worth asking someone in the know if you are concerned.
Doof
