310 Oil in air box. – OLD Bull Trailriders

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November 5, 2013 at 2:47 am #103412

terryjhaynes
Member

Just trying to figger out a better way to may be re root the breather hose from the valve cover.
They’v got it set up so it runs into the clean side of the intake,,,,,Problem,,,,,when I drop the bike on it’s left side,the side that the hose comes out,it pumps oil into the air box which findes it way out the bottom onto the front of the swing arm, and on the weekend onto the rear breaks.
I’v read that you can run the breather up high somewhere,but wouldn’t the oil just piss out there any way.
I know that many would say,just don’t drop the bike but that realy isn’t an option :laugh:
Cheers Teza.

November 5, 2013 at 7:40 am #251380

MARTIN TWINE
Member

Teza, get a length of hose same size as you have.Run it from the valve cover straight up and under the tank and up high along the frame then turn it back down towards the airbox and into it.Just a big long uphill loop really.
If you drop it,the oil has to run uphill which will only be a little bit,then when you stand the bike back up it will run back into the engine.

I had a similar problem with my KTM,on a extreme steep downhill some oil would run from the breather hose,as it ran from the valve cover straight down ,i did the above and fixed it instantly. I never have any oil in airbox.

Cheers Marty

November 5, 2013 at 11:12 am #251386

Alex
Member

That’s the final word there from Marty. The number one fix. Thumbs up.

November 5, 2013 at 9:39 pm #251381

terryjhaynes
Member

Ok thanks guyes,It’s a bit tight under the tank,but I’ll work somthing out,It will be good to loos that shity oil every where.
Cheers Teza

November 6, 2013 at 2:02 am #251382

terryjhaynes
Member

OK got it done,I was abell to run the hose up and under the top of the frame and back down to the air box,it was a tight squees and a bit of a hastle geting the tank back on,but on it is.
Now I just have to go and fall off a couple of times for a tester :laugh:
Thanks again guyes.
Teza.

November 6, 2013 at 10:43 pm #251433

Roy
Member

Teza, you didn’t pinch the breather hose did you. Probably wouldn’t make a difference if you did anyway but I guess in theory a breather hose should breathe. Something to maybe check anyway (especially if your breather hose starts acting like a balloon toy).

November 7, 2013 at 4:36 am #251474

terryjhaynes
Member

Bundyroy wrote:

Teza, you didn’t pinch the breather hose did you. Probably wouldn’t make a difference if you did anyway but I guess in theory a breather hose should breathe. Something to maybe check anyway (especially if your breather hose starts acting like a balloon toy).

Yeh,It was tight ,but I tucked the hose in here and there and put the tank on and off a few times,I’m pretty sure it’s not pinched anywhere.I’d hate to blow a seal or somthing because of crank case presier.
Thanks for asking anyway.
Cheers teza.

November 7, 2013 at 5:10 am #251486

Alex
Member

Also, some years ago I managed to tidy up some under tank routing and the end result was the hydraulic line for my clutch being so tight is pulled out of the master. Very annoying. Make sure your throttle cable doesn’t do the same LOL!

November 7, 2013 at 5:54 am #251487

terryjhaynes
Member

axel wrote:

Also, some years ago I managed to tidy up some under tank routing and the end result was the hydraulic line for my clutch being so tight is pulled out of the master. Very annoying. Make sure your throttle cable doesn’t do the same LOL!

Yeh I checked all the cables and lines,and they have plenty of free play,took if for a bit off a blatt,all seems good. Just has to pass the trail test next,if that oil stays where it should I will be well pleased,the 310 has turned out to be a top little bike,I’m geting rite into it,and having a blast.
cheers teza.

November 7, 2013 at 5:57 am #251383

Adam Rodgers
Member

Teza,

I’ve got a few little tracks for you to test it out on

Have to catch up soon.

Adam.

November 7, 2013 at 6:37 am #251488

terryjhaynes
Member

adam wrote:

Teza,

I’ve got a few little tracks for you to test it out on

Have to catch up soon.

Adam.

I’m sure you do Adam I look forward to it :unsure: :laugh: :laugh:
Catch up soon.
Cheers teza.

November 7, 2013 at 7:15 am #251387

Brendon Carre
Member

MARTY 450 wrote:

Teza, get a length of hose same size as you have.Run it from the valve cover straight up and under the tank and up high along the frame then turn it back down towards the airbox and into it.Just a big long uphill loop really.
If you drop it,the oil has to run uphill which will only be a little bit,then when you stand the bike back up it will run back into the engine.

I had a similar problem with my KTM,on a extreme steep downhill some oil would run from the breather hose,as it ran from the valve cover straight down ,i did the above and fixed it instantly. I never have any oil in airbox.

Cheers Marty

+1 on what Marty said and if your running a foam filter make sure its not just excess oil from the filter while its sitting in the shed between rides.

November 7, 2013 at 7:37 am #251489

terryjhaynes
Member

boulder wrote:

MARTY 450 wrote:

Teza, get a length of hose same size as you have.Run it from the valve cover straight up and under the tank and up high along the frame then turn it back down towards the airbox and into it.Just a big long uphill loop really.
If you drop it,the oil has to run uphill which will only be a little bit,then when you stand the bike back up it will run back into the engine.

I had a similar problem with my KTM,on a extreme steep downhill some oil would run from the breather hose,as it ran from the valve cover straight down ,i did the above and fixed it instantly. I never have any oil in airbox.

Cheers Marty

+1 on what Marty said and if your running a foam filter make sure its not just excess oil from the filter while its sitting in the shed between rides.

Definitely engin oil there Boulder,I use a spray filter oil,and by my good fortune,it hasn’t sat in the shed for more than 7 or 8 days at a time lately.
Cheers teza
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