Chaincase breather hose leaking oil into engine compartment during rol

Maverick800XRS · Dec 17, 2015

Hey guys,

I have a 2014 Ski-Doo 800 XM these days and ever since new I have noticed the engine compartment gets much much oilier than any of my previous sleds. I have the aluminum oil reservoir insert so my engine oil is not leaking. I tracked it down to the chaincase vent tube as it does not have any sort of checkvalve on it. So in the event of a roll over whether it be intentional to get unstuck or unintentional any time the sled ends up on it's hood, on it' side or rolled completely over a bit of chaincase oil comes out this breather tube. It then coats damn near everything on the muffler side of the sled and I think it may have even contributed to melting my stater last year as the oil found it's way down there as well. All labor and parts for this repair was covered under warranty.

So I guess my question is does anyone else experience this and has anyone found a fix for this? My BRP mechanic told me I may have been overfilling the chaincase but the last couple times I have let the oil seep out of the check level plug until it stops flowing out but it never helped the issue any. I am using amsoil chaincase oil but this shouldn't matter as any oil would work it's way out this breather tube I'm sure.

I think I'm going to put one of those motocross fuel tank breather valves on it and see what happens as this would still allow air in and out but not liquid out.

Thanks in advance for any comments or advice!

Mav,

Bring on the snow · Dec 17, 2015

what ive been doing is get a longer hose(fuel line) and run it down by the footwell and zip tie it there, now if it leaks it will drip outside of the sled. And no oil residue in my engine compartment

Lone Stone · Dec 17, 2015

DITCHBANGERPRO said:
what ive been doing is get a longer hose(fuel line) and run it down by the footwell and zip tie it there, now if it leaks it will drip outside of the sled. And no oil residue in my engine compartment

Great idea. I'll be doing it this weekend.

Bring on the snow · Dec 17, 2015

i looped it around the top of the chaincase(under the oil tank)and then down to the footwell..you will see what i mean

SledWreck · Dec 17, 2015

I`m not a mountain rider but what a few us do is extend our coolant overflow hose down into the foot as well so when is spits it`s out the bottom and not all over the chain case area..

Maverick800XRS · Dec 18, 2015

The summit actually spits the coolant overflow out the bottom pan up by the shock tower so that's not too bad for us mountain guys. Shoved my dirt bike gas tank valve into the hose last night when loading up. I'll take a pic and comment after the weekend to see what happens!

banditpowdercoat · Dec 18, 2015

I'll try snap a pic today Mav, but I looped a long hose on mine too

banditpowdercoat · Dec 18, 2015

I put the cap sideways loop over chaincase then down to a exh spring to hold the end. Don't loose a drop this way

Sent from my iPhone while my Heli plays with the gophers

ilovemyskidog · Dec 18, 2015

Thanks for the great idea fellas !

Bring on the snow · Dec 19, 2015

i looped it with the nipple at 12oclock

banditpowdercoat · Dec 19, 2015

DITCHBANGERPRO said:
i looped it with the nipple at 12oclock

Thought about that but with it at the 9:00 then its just that much farther up the chain case when sled is inverted to lessen the oil flow into hose, yet still horizontal letting the oil in the hose flow bback into case when righted. Having the kink helps too im sure. Letting it vent, bbut restricting the oil free flow

kozy747 · Dec 23, 2015

Great Idea and an easy fix as my sled spends alot of time on its hood too

HellRaZoR004 · Dec 27, 2015

I had the same issue last year...I must have rolled the sled getting it unstuck too many times and lost all the oil. My chain was toast and I barely made it back to the road. Make sure to check the level often!

What I did this year is extended the hose and added a loop in the middle. Hopefully it helps. This system should really have a check valve.

Chaincase breather hose leaking oil into engine compartment during rol

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