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Author Topic: Oil in Airbox fix  (Read 1719 times)

r80rt

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Re: Oil in Airbox fix
« Reply #15 on: May 29, 2011, 12:26:46 PM »
Centerstand.
On the eighth day God created the C5, and it was better looking than anything on the planet.
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GreenRE

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Re: Oil in Airbox fix
« Reply #17 on: May 29, 2011, 04:21:03 PM »
Does this KnN crankcase filter have a one-way valve.

Ducati Scotty

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Re: Oil in Airbox fix
« Reply #18 on: May 29, 2011, 06:58:26 PM »
No, it's just a filter.

Scott

Sub

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Re: Oil in Airbox fix
« Reply #19 on: May 30, 2011, 04:16:06 AM »
Does it need a one-way valve?

r80rt, ever have any oil seeping out of yours? I don't have this problem now, but I guess some others do (likely from over filling the oil).

Ducati Scotty

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Re: Oil in Airbox fix
« Reply #20 on: May 30, 2011, 04:57:15 AM »
A one way valve is nice but that's to keep partial vacuum in the crankcase which adds a bit of power.  It's  the same reason it's hooked to the airbox, partial vacuum (and it burns any vapors for emissions).  It's not required. 

Some filters weep on some bikes, some don't.  If yours does you can usually sort it by running a longer line and setting the filter higher.  That way if it burps a little oil up it doesn't make it to the top and just runs back down.

Scott

BRADEY

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Re: Oil in Airbox fix
« Reply #21 on: May 30, 2011, 05:52:20 AM »
Why not check the "Old English Arragement" on the Iron barrel REs...
It has a separate "canister, attached at one end to the engine and the other to the air filter box. Any oil that made to the top would be collected in the canister (oil catch can) and air would be released into the air filter box. It was virtually bullet proof.

Cheers.

r80rt

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Re: Oil in Airbox fix
« Reply #22 on: May 30, 2011, 12:03:27 PM »
Does it need a one-way valve?

r80rt, ever have any oil seeping out of yours? I don't have this problem now, but I guess some others do (likely from over filling the oil).
The C5 doesn't have a one way valve so I don't think it's needed. I used a long hose and went up as high as possible then I turned it back down a few inches to keep any water from going down the hose, no sign of any oil from it.
The UCE has a breather chamber bult into the engine right hand side cover, it's a hidden catch can that takes care of any normal oil and lets only vapor vent out. It's a pretty cool design, if oil gets to the air box it's because the bike is over filled.
Get yourself a factory service manual and parts manual, they will answer a lot of questions ;)
« Last Edit: May 31, 2011, 02:03:39 AM by r80rt »
On the eighth day God created the C5, and it was better looking than anything on the planet.
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PAndy

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Re: Oil in Airbox fix
« Reply #23 on: June 27, 2011, 09:46:06 PM »
I've been very methodical about filling to the correct level, I'm about halfway between the two lines (approx. a quarter full on the entire sightglass) and I had the worse oil vomit to date last night. 

It only occurs when I'm at highway speed for a sustained period and it seems to be worse when the engine is colder but it is still causing quite a mess.

Does anyone else drive at highway speeds (~70 mph) for a significant period of time (20+ mins)?

Ducati Scotty

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Re: Oil in Airbox fix
« Reply #24 on: June 27, 2011, 10:08:54 PM »
I do, and no problems.  One thing to try, fill to just the bottom line.  Then get the engine nice and hot and see where it is.  You want it at the top line (middle of the site glass) when it's hot.  For whatever reason the oil is higher when the engine is hot than when it is cold.

Scott

PAndy

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Re: Oil in Airbox fix
« Reply #25 on: June 27, 2011, 10:18:28 PM »
That's how I fill it, to the bottom line, run for ~10 minutes, then fill to halfway between lines, so if anything I'm a little underfilled, but nevertheless oil vomit.


r80rt

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Re: Oil in Airbox fix
« Reply #26 on: June 27, 2011, 10:20:57 PM »
Have your dealer check it out.
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Kevin Mahoney

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Re: Oil in Airbox fix
« Reply #27 on: June 28, 2011, 02:39:59 AM »
reduce the oil level to the bottom of the line

Tri750

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Re: Oil in Airbox fix
« Reply #28 on: June 28, 2011, 03:56:42 AM »
low is good, good is low.
The owners manual says to mid-way it.
we tell new owners over and over to leave it where we set it
at PDI.
so far, just I of our folks overfilled and knew immediately
what happened. no drama.
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prof_stack

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Re: Oil in Airbox fix
« Reply #29 on: June 28, 2011, 04:24:45 AM »
If you measure what comes out, replace it with about the same.  My C5 level is at the upper line and so far there has been no oil in the box.  But perhaps after an aggressive ride it might be. 

Sounds like a challenge!   :D
A Royal Enfield owner's cup is always half full.