Oil in my airbox?

[juice]

Is this normal? I had to change out my airbox cover because H-D dealership tightened my screws too much and broke it! When changing it out I noticed there is oil on the plastic plate that everything sits on.

 

[BuellerPilot]

Do the breather re-route.

SEARCH!

~Mike....

 

[juice]

I know what I am doing tonight thanks!

 

[Mike Van V]

Funny...

Doing the "breather reroute" does NOT fix..the possible problem(s)..!

All it does is mask or hide the possible problems..!
Changing (out!?) things that have nothing to do with the actual problem, doesn't diagnose and fix the problem..

How much oil in the air box?
Actual liquid or just a mist?
How high are the rpm's you're taking the engine to?
Is the oil level too high?
How many miles on the engine?
Has the engine been overheated?

These are the things that are required to be answered to help diagnose the possible problem(s).
Blanket answer..."breather reroute"...what a joke..

More people need to step up and understand what this stuff really does.

Mike

 

[phil190]

Funny...

Doing the "breather reroute" does NOT fix..the possible problem(s)..!

All it does is mask or hide the possible problems..!
Changing (out!?) things that have nothing to do with the actual problem, doesn't diagnose and fix the problem..

How much oil in the air box?
Actual liquid or just a mist?
How high are the rpm's you're taking the engine to?
Is the oil level too high?
How many miles on the engine?
Has the engine been overheated?

These are the things that are required to be answered to help diagnose the possible problem(s).
Blanket answer..."breather reroute"...what a joke..

More people need to step up and understand what this stuff really does.

Mike

the breather reroute IS a solution to the problem. the oil in the air filter happens to everyone, its the moisture in the air your engine pulls in an burns up. it comes out of the PCV valves and re-liquefies. so all we're doing is moving out of the air box and back where it belongs (not in our airbox's). it was a dumb harley design that we just played around with to make our bikes last longer and idle better :]

 

[hdstn]

+1 Phil. Pull the air cleaner of any HD and you will see the same. I got my bike with 5500 on it and the air box was full of oil when I got it.

 

[anrkizm95]

Doing the "breather reroute" does NOT fix..the possible problem(s)..!

All it does is mask or hide the possible problems..!
Changing (out!?) things that have nothing to do with the actual problem, doesn't diagnose and fix the problem..

How much oil in the air box?
Actual liquid or just a mist?
How high are the rpm's you're taking the engine to?
Is the oil level too high?
How many miles on the engine?
Has the engine been overheated?

These are the things that are required to be answered to help diagnose the possible problem(s).
Blanket answer..."breather reroute"...what a joke..

More people need to step up and understand what this stuff really does.

[up][up][up] i ride with 2 other buells none of us have the breather reroute none of us has oil pooling mines over 15000 miles.the breather reroute may solve oil pooling.but not doing it is not the problem.there is another reason the oil is pooling reroute just disguises it

 

[juice]

There is no pooling oil just a really dirty pan more of a mist.
I ride high rpms
I just did an oil change so time will tell on that one
8300 miles

 

[anrkizm95]

i ride between 5000 and limiter always and have never had any oil at all in my air box.most people swear by the reroute i tried it for about a 1000 miles and saw no improvement in anything.its a cheap mod so its worth a try.but i would be more concerned with the real cause of any oil in my air box

 

[juice]

i Just finished the mod very easy and cheap either way it did help the sputtering in 1st gear!

 

[pinball242]

how about mine has 14-5 on it with the reroute and just tonight i noticed small plumes of smoke from somewhere. at and when coming to stops. before i start a new thread on this does anybody have suggestions?

 

[anrkizm95]

have you noticed any oil leaks or trans leaks.you could have a small leak.it might be coming from your reroute breather also

 

[07Bolt]

with or without the re-route if u block off the pcv's, oil will leak, from a relief port or a gasket. the tubes do produce positive air pressure and it does flow into the throttle body, unless u re-route it

 

[93fee]

+1 for what Mike Van V wrote.
for many reasons rerouting is just a half step. it is of course better than stock (just for the fact of collecting oil in reservoir but not in airbox), but the main question is still why this ventilation is so strangely engeneered??? I think it is first of all the ecoligical part of the story, but even if so why not to make this system work absolutely properly.
On my sTT at every oil change I check airbox for oil leaks - the only thing I find every time - slight oil mist which I wipe off with vd40. Bike being bore stock for 10K miles (for many reasons I don't foul around with my Buell, but the main is that I respect it's constructor & engeneer Erik Buell & also because I use it on daily basis. I prefer to toy around with other bikes)

 

[pinball242]

Yea I checked for leaks this morning all clean. Then after the ride to work I found the smoke coming from the breather filter only after revving the engine. At least that's where I think I saw it. Gonna leave it to drain all day, maybe change the filter? thanks for the thread hijack allowance also

 

[jimijeans]

The Pcv lines go to the Air box simply because of the cost, and the recirculation of the oil fumes. Just check out the autos/trucks and see that is where the Pollution Control Valve hose goes also. It's just helping to ventilate the Engine crankcase.I think the reason the Motorcycles We are riding just have it going to the Air box is due to with this is where the fumes from the rocker covers on EVERY Gasoline style Engine have been for some time. The Breather Reroute Done properly can benefit the lower end Stumbling cause it's simply getting more ventalation.Now if the bike gets really hot it will smoke[vapor] through(with no Reroute)the Air box cover just because it is in need of more venting & cooling.This is One of the [MANY] reasons the 2010 Fan Run program was introduced for Buells. Thank you again ERIK BUELL, for saving these bikes. So depending on if you are a Traffic rider, or Go the Highway every thing you can do that makes you feel better as long as it's done right, to make your bike last longer is not really going to hurt.NOW IF YOUR BIKE is smoking a lot through the Crankcase you may be burning some oil also OR the pcv fitting on top COULD be getting worn out, clogged or need attention. Maintenance is key to a good running bike.[smirk]

 

[anrkizm95]

the reason breather hoses go to the air box is the pressure in the air box helps draw the gasses out of the engine.the same reason pcv valves are routed to vaccum.unfortunately are bikes dont have pcv valves

 

[Sirius815]

^^ +1. That's why on my mod, I placed a catch can inline with the breather, but ended back in the airbox so that the vacuum still draws out the fumes.

 

[nativeXb12Rbuell]

Pollution Control Valve

what ?? [confused][confused]

Correction = PCV is positive crankcase vent (PCV) valves !!

unfortunately are bikes dont have pcv valves

another WHAT ??[confused][confused] see next post!! the XB does and you can put a XB rockerbox cover on the old tuber buells too.

sorry all you but Mikevan v. makes a very good point. Need ALOT MORE INFO and pictures of it and other engine pics and any symtoms to correctly and Completely troubleshoot and diagnose and correct this or any other problem !! the Breather reroute may help and may not if there is more than just a little oil mist spray. how long and how much oil ?? the longer a small amount adds up to loo like alot but the dirt makes it look worse , if you get a large amount in a short amount of time , then you need to look at other things to, to figure out WHY? if its just a very small amount like in the pic below the breather reroute should help (but may not elimnate the entire problem if there is more to the problem), is there any oil leaking on or around the pcv valves themselves or engine gaskets or any where else. ??

 

[nativeXb12Rbuell]

the point of the breather reroute is to keep the oil mist spray and vapor and crankcase gases from entering in to the intake . the gases and oil mist and vapors dont burn very well and cause your engine to run at BELOW its' OPTIMUM level .


from the service manual:
Crankcase Breathing System ,see fig.3-114. Presure created in the flywheel area on the piston downstroke is released through the REED VALVE into the gear case. From there a mixtre of crankcase air and oil mist is vented up the push rod covers to the upper rocker box(top of head).
see fig.3-115. Air is allowed to escape the rocker boxes by exiting the postive crankcase vent(PCV) valves(4)
locatedon top of the rocker boxes (top of rocker cover/valve cover).From the PCV valves the air enters the crankcase breather hoses(2,& 3). The crankcase breather hoses route through the air cleaner base plate (1) to the air box where it isdirected inside the air filter element and back into the engine. the oil mist collects and eventually returns to the crankcase through oil passageways in the cylinder heads. that how it is originally designed to work. maybe that might help you understand it somewhat better. see figures below..

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hey Juice , take look at the other threads on this , and google search too. there is many sides to this breather reroute mod "debate" !! it helps most bikes with the small simaliar problem and some it doesn't help much or not at all more than likely because of other problems.(usually problems that was not properly diagnosed or troubleshoted)