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Post by summerking on Jul 16, 2008 15:34:12 GMT
Hello
my 1997 diversion drips engine oil from a hose that runs from the bottom of the airbox and stops just above the sidestand hinge where it proceeds to from a small pool sometimes the size of your hand or sometimes just a few drops it does it immediately on stopping after having ridden it
I.d read somewhere else that oil can escape past worn pistons and out via a crankcase breather?
I,ve tried a search but have not had anything definitive,at present I top up the oil just to make sure i have enough to form a puddle at the other end of my journey
any help appreciated
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Post by El Fuego on Jul 16, 2008 15:38:33 GMT
Take of your tank and check whether your air filter is gunged up?
There's lots of info on this subject somewhere on this site.
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Post by amorti on Jul 16, 2008 16:58:38 GMT
Search!!eleven11one!!
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Post by joriff on Jul 16, 2008 17:46:17 GMT
I don't really understand this. On my 95 i have 3 hoses off my airbox and they all lead into something, so they cant leak anywhere. My advice is get a haynes manual! There is a large breather hose going into the erm.. crankshaft or something. A small one comes off a T peice with the crankshaft one and goes to the cam cover i think, and another one which is for drainage off the airbox which goes erm... to .. the cam cover also i think. Someone will probably correct me on this. I know my 95 is quite different to a 97...  |
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Post by summerking on Jul 19, 2008 19:06:18 GMT
Hi just an update on my d6
I rode it 100 miles to the garage I bought it from
and the engine got smoother and smoother and progressively less powerfull till I got to the dealership where apon stopping the bike it proceeded to pump every drop of engine oil onto the forecourt via the airbox breather hose,the oil puddle was vaguely reminiscent of a butterfly in shape but this was lost on the dealer as he tried vainly to pass off the failing engine as being symptomatic of a little over revving......after standing my ground as I had the bike from him for only 2 weeks he gave me back my bike I had px,ed and the £150 balance.
the smooth engine points at a loss of compression and the oil escaping via a badly worn or damaged piston/ring/barrel equation
thanks for your help so far
now whos got the number for a Lifan,Hongda, dealership?
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Post by amorti on Jul 20, 2008 13:08:42 GMT
No it doesn't (necessarily) - it points to the main thick breather from the crankcase to the airbox being kinked and/or blocked, which they all do as the pipe is built or thin rubber which tends to degrade and kink, meaning the little skinny one from the rocker cover has to do all the breathing duties, which it isn't up to. It then gets blocked, meaning pressure builds up, and the bike pumps oil out the top breather in a gush, through the airbox onto the floor. It won't pump all of it out, but it will pump a good bit out, and it will drain out at the end of your ride when you put the bike on the side stand, as that puts the drain hole at the lowest point of the airbox.
Searching would've told you that. Easy cheap fix is to replace the main breather with garden hose. Still, enjoy your old bike.
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Post by joriff on Jul 21, 2008 17:26:45 GMT
Should have waited for the forum to reply, its a fountain of knowledge here!! Most things are an easy fix.  |
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Post by pinkunicorn on Jul 24, 2008 22:23:17 GMT
I had the same problem with my 600 Divy. The breather hose was clogged up with emulsified oil. Once this was cleared the problem was solved and has been ok since |
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Post by bostonboy on Jul 28, 2008 7:21:32 GMT
if only he had looked
dan
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tgp
Newbie
Posts: 2
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Post by tgp on Sept 1, 2008 14:41:50 GMT
I think I have this problem, I tried that search but had no luck...
I was wiping da bottom of my bike and noticed this hose free and throught that it was the issue, but then I cannot see where it fits too.
So I guess I need to look at removing the tank, OMFG that seems like a task....
<edit>
Removed the tank, pulled the hose and cleaned a lot of white gunk away, was this the problem?
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Post by amorti on Sept 1, 2008 21:58:23 GMT
Re: Oil leak
« Reply #2 on 22 May, 2008, 5:46am »
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Post by bobh on Sept 1, 2008 22:02:04 GMT
White gunk is always a problem. It usually only happens when a bike is being used for shorter trips where the engine oil doesn't stay hot for long enough to evaporate off all the condensation that built up the last time it cooled down. Unfortunately once it's there it won't normally go away of its own accord, so it just builds up until the pipes are completely blocked.
When this happens it causes back pressure in the system and results in everything from oil drips through to misfiring, apparently. So it's a good idea to clean all the breather hoses out regularly.
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tgp
Newbie
Posts: 2
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Post by tgp on Sept 1, 2008 22:35:09 GMT
cheers bobh, hopefully this clean will help, and given I managed to complete the task, thanks to this site and my haynes manual, (done in 40 mins).
I'll plan to do it once a week / month depending on how things run...
<TGP>
As for shorter trips, I generally do 27 miles on a run to work, then 27 miles home, so I'd have thought this would be ample.
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Post by amorti on Sept 3, 2008 20:24:57 GMT
It is - the problem is probably what I described, check the condition of the long thick tube, particularly where it curves tightly right under the tank. If it's kinked, it's broken and needs replacing (with garden hose which is much stronger), as if it's kinked it leaves all the breathing duties to the little pipe off the rocker cover, which is unbaffled, allowing oil up into the airbox; you guessed the rest. It's useless and should be removed anyway, as per the US spec bike.
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Post by cable on Dec 20, 2008 16:14:20 GMT
No it doesn't (necessarily) - it points to the main thick breather from the crankcase to the airbox being kinked and/or blocked, which they all do as the pipe is built or thin rubber which tends to degrade and kink, meaning the little skinny one from the rocker cover has to do all the breathing duties, which it isn't up to. It then gets blocked, meaning pressure builds up, and the bike pumps oil out the top breather in a gush, through the airbox onto the floor. It won't pump all of it out, but it will pump a good bit out, and it will drain out at the end of your ride when you put the bike on the side stand, as that puts the drain hole at the lowest point of the airbox. Searching would've told you that. Easy cheap fix is to replace the main breather with garden hose. Still, enjoy your old bike. thought i would add my story just to confirm the problem! the last few weeks i had noticed a small amount of oil gathering at the back of my engine, just below the cam chain tensioner and assumed the cylinder block gasket was on its way out. then a few days later i saw that the cam chain tensioner cap sealing washer looked as though it was leaking oil.... cushtie i thought! cheaper fix than originally anticipated. anyway, on closer inspection (basically just looking up with a torch to the airbox) i could see oil dripping from the top end of the main breather hose!!! on to the cct, which in turn was settling around the cylinder block gasket ;D a new piece of pipe and a quick clean out of the airbox and all is good. |
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Post by metalforever on Feb 14, 2009 18:18:26 GMT
Ive just ridden my new to me divvy home from derby and its doing this also, just a little bit of oil dripped out (About the size of a tennis balls diametre).
So to correct it i need a larger, stronger piece of hose as a breather?
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Post by hughmcq on Feb 14, 2009 20:08:18 GMT
Alternative is just to clean out the existing hoses and the air box and do this on a regular basis - maybe every 6 months or every year....
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Post by metalforever on Feb 14, 2009 21:24:20 GMT
I'll try that first, cheers!
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Post by amorti on Feb 14, 2009 22:45:10 GMT
Cleaning out the airbox sorts the symptoms, and needs to be done regularly (read: frequently). Changing the piece of hose sorts the root of the problem, and only needs to be done once. Don't waste your time!
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Post by metalforever on Feb 15, 2009 10:40:05 GMT
Well i cleaned out the hose, the airbox had SOME gunk in but not loads... I had to restrict it so that was the least of my worries.
anyway the hose was full and so was the 'T' piece under the airbox so ive cleaned all of those and reassembled, gunna give the bike a good spin and see how she goes!
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Post by metalforever on Feb 17, 2009 12:34:24 GMT
Right ive been running the bike since i cleaned the breather and it seems to have worked i'm going to fit a braided breather when i have some money but so far so good! |
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Post by amorti on Feb 17, 2009 17:53:11 GMT
Dude - slice a bit off the end of a garden hose, it's free.
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Post by CD on Feb 17, 2009 19:20:52 GMT
I suspect Divvie engines are overcooled during the winter months so they dont properly "boil off" all the moisture from the oil. It's a price of being air cooled. One of these www.aerocorsair.com/id62.htm would be a better investment than a braided hose. A "rad blind" would reduce the airflow but would look a bit silly. Not too bad a cost www.westach.com/ though who knows if they export to UK. A four wire (thermocouple under each plug) would be nice but not cheap.  |
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Post by metalforever on Feb 17, 2009 19:46:07 GMT
Dude - slice a bit off the end of a garden hose, it's free. Im a bit of a tart...  |
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Post by CD on Feb 17, 2009 19:56:10 GMT
The hose is almost invisible - save the ££s for some black powder coated wheels with polished rims (and a large supply of Solvol to keep it looking nice). ;D
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Post by amorti on Feb 24, 2009 23:30:01 GMT
Dude - slice a bit off the end of a garden hose, it's free. Im a bit of a tart... You bought the wrong bike then mate. |
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Post by CD on Feb 25, 2009 15:43:03 GMT
Another thought, the cold weather will have chilled the cam box covers more than usual so moisture boiled out of the oil can be condensed in the top of the engine. to gunk up the breather pipes. The issue will probably go away as the weather warms up, but maybe some sort of foil insulating blanket could be clipped over the rockers for the colder weather and/or shorter runs. It might not need much to tip the balance and avoid the moisture condensing.
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Post by amorti on Feb 25, 2009 19:40:24 GMT
Guys, you're not listening!
My bike had the same problem. I used a bit of garden hose to replace the kinked hose, and removed the little breather that was frayed and kinked.
Now it doesn't have the problem, at all. Or any other related issue, 10k+ miles after making the mod.
Stop messing about, stop guessing, just fix it.
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Post by stustan64 on Mar 17, 2009 15:25:22 GMT
Hi all, new to the site and new to my little Divvy 600. I have noticed this oil leak from the breather hose that everyone seems to of had!!! I'm not being lazy and its not a problem i will be able to do the work, but i was just wondering if anyone has ever measured the length of hose to replace the old one with? If so could someone please post? Its just i can have a bit of braided hose made up at work for free!!! I'm not being a tart!!!ITS FREE!!! LOL... Look forward to hearing from you.
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Post by CD on Mar 17, 2009 15:38:42 GMT
You will have to pull the thing out and look, but dont go down to a smaller bore size as that is the same as having emulsion gunk partly clogging the standard tube.
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this topic is covered 3 or 4 times on the first page.
