Air filter blow by hose?? By fairweasel2323 (Read 9,063 times)

[fairweasel2323]

How important is it to have the air filter blow by hose I just noticed i lost mine and im working on finding a piece of hose to replace it if its "needed" and wandering if it needs to be closed off to collect oil? I was thinking it was really just to keep oil from being thrown all over and with the hose and closed end it collects so theres no mess? basically how important is it? thanks alot!

[fairweasel2323]

not my pic just one i found to use to describe part mine was always dry and clear no oil never in it when I checked bine riding without since last summer some time lol

[bikedown]

for me

never blow greasy hot engine gas back into a device that has heat and dirt as a enimy.

make a catch can or tape padded bottle to catch that crap.

and block the head vent hole to air box so it does not suck in dust.

the head vent breaths air in as well, thats how it blows air out, so have a small bit of a filter, over the device that catches oil and breaths air.

[fairweasel2323]

Apr 15, 2012 22:54:04 GMT -6 bikedown said:

for me

never blow greasy hot engine gas back into a device that has heat and dirt as a enimy.

make a catch can or tape padded bottle to catch that crap.

and block the head vent hole to air box so it does not suck in dust.

the head vent breaths air in as well, thats how it blows air out, so have a small bit of a filter, over the device that catches oil and breaths air.

none of that makes any sense to me? head vent hole? "never blow greasy hot engine gas back into a device that has heat and dirt as a enimy." Its a drain it dont suck in. I just lost the Air Filter Blow By Hose. Why would I need to block anything off? Im just looking to put a new piece of hose back where original one was in the pic. My question is why was the hose closed off at end? just to collect the oil the drains so it dont get all over the scoot is only thing I could think of why it would be closed to collect the oil? In that case no big deal I would just run a longer hose so if any oil drained it would drain closer to ground instead of getting thrown all over the scooter.

[nulldevice]

Judging from that post Bikedown must be a non-native English speaker and speak/read/write English as a second or maybe third language. Have mercy for him.

The problem with keeping it open, regardless of how close to the ground, is the air turbulence will take any oil or oily water that works its way out and spread it all over the back of the scooter. I suggest you cap it and drain it as needed. It's cleaner that way.

[fairweasel2323]

hey thanks alot nulldevice! I had no clue what Bikedown was saying maybe he thought I was talking about the hose that comes from the valve cover thats just vents
to the air filter

Read more: thescooterprofessor.proboards.com/index.cgi?action=display&board=250classchinese&thread=1291&page=1#ixzz1sFvqV46g

[fairweasel2323]

Now to find a big enough hose/tube thats clear and figure out a way to plug it? I hadnt done much parts searching for this except thru Honda 30$ I dont think so!!
www.cheapcycleparts.com/model_years/1476-honda-2007-helix-cn250/assemblies/12617

Part 31 and 16 and the clamps part 1 way overpriced!

[fairweasel2323]

parts I need just expensive 30$ for a little 4-6inch hose LOL maybe I can find them cheaper? Im going to call the dealer I got it from he had same scoot as a parts bike I got a speedo puck off of last week

[fairweasel2323]

www.powersportsmax.com/popup_image.php/pID/13628/image/0
the clear hose off the air filter box is what i need!

[bikedown]

Apr 16, 2012 16:53:07 GMT -6 fairweasel2323 said:

Apr 15, 2012 22:54:04 GMT -6 bikedown said:

for me

never blow greasy hot engine gas back into a device that has heat and dirt as a enimy.

make a catch can or tape padded bottle to catch that crap.

and block the head vent hole to air box so it does not suck in dust.

the head vent breaths air in as well, thats how it blows air out, so have a small bit of a filter, over the device that catches oil and breaths air.

none of that makes any sense to me? head vent hole? "never blow greasy hot engine gas back into a device that has heat and dirt as a enimy." Its a drain it dont suck in. I just lost the Air Filter Blow By Hose. Why would I need to block anything off? Im just looking to put a new piece of hose back where original one was in the pic. My question is why was the hose closed off at end? just to collect the oil the drains so it dont get all over the scoot is only thing I could think of why it would be closed to collect the oil? In that case no big deal I would just run a longer hose so if any oil drained it would drain closer to ground instead of getting thrown all over the scooter.

The long version

if your head breather EPA (nutso) idea is like most it puts oil into your air box off the head breather, it collects as a vapor all over the inside of your filter air handler and drains down that little tube.

SEE THE OIL in that tube, most of it went back down your air intake as a greasy vapor, displacing oxagen and recycling heat.

the greasy vapor helps gunk your valves and the heat off the head breather ages your bike.

most head vents blow right into the air box, thats were some/most of the oil comes from in that clear tube, the rest gos back down the air intake, hot and greasy.

Which is a trash of a idea.... throwing garbage off the head right back down the air intake BY THE BACK FILTER.

if your head does not vent to air box, good for you, but most do as a EPA fix.

When you remove the hose from the air box that gos up to head breather you will
"have to block the hole" it leaves in your air box plastics, or you will suck dirt in, counter productive to removing head breather from air box.

THE CLEAR HOSE WAS CLOSED OFF AT THE END AS TO NOT LET IT SUCK ROAD CRAP INTO YOUR AIR INTAKE.

you can get replacement hose at home depot for a buck and block end with caulk, if you want to keep the thing.

Hope that explaination makes you feel better, i assumed you knew more about this recycleing head trash issue and how bad it is for your bike--

Interestingly, sometimes those head vent hoses drain into the back gear box,

sure just what i want,,,,, funky inefficient head breather grease
in my back gear box.

Where my back tire wears down faster then front for many reasons, one of which is .....it is hotter from engine.

head bone connected to the toe bone.

[bikedown]

Apr 16, 2012 19:14:37 GMT -6 fairweasel2323 said:

hey thanks alot nulldevice! I had no clue what Bikedown was saying maybe he thought I was talking about the hose that comes from the valve cover thats just vents
to the air filter

Read more: thescooterprofessor.proboards.com/index.cgi?action=display&board=250classchinese&thread=1291&page=1#ixzz1sFvqV46g

exactly, never seen any other kind

[fairweasel2323]

I never removed a hose?? " When you remove the hose from the air box that gos up to head breather you will "have to block the hole" it leaves in your air box plastics, or you will suck dirt in, counter productive to removing head breather from air box." The hose from the head is still there! look at link here to my air filter box www.powersportsmax.com/product_info.php/products_id/13628
look at the pics the hose thats I lost somewhere while riding is the clear hose comes off air filter in front of box right behind the filter and cover for the CVT. I still have the intake tube off the carb connected, with the hoses from the head still connected. The hose that runs out of air filter box to the rear gear box still there as u can see from this pic
this is just clear hose that catches oil blow off, it comes from bottom of air filter to nowhere and it only blows out just put my finger up to where the hose is missing no sucking. What u are saying makes sense if it was the hose that goes to the head. this hose goes nowhere just hangs. Just like Nulldevice said its just coming from the air filter box? and goes no where yea just plug it off. at first, i thought you were talking about the hose
that comes from the valve cover thats just vents
to the air filter

now thats a different story!! If I was missing the hose from the header/valve cover that vents to air filter then exactly what u are saying makes sense!

Read more: thescooterprofessor.proboards.com/index.cgi?action=display&board=250classchinese&thread=1291&page=1#ixzz1sHY7aI5u

[fairweasel2323]

What type of scoot do u have bikedown? My 150cc Wildfire I had did not have this hose either just a open vent hole in bottom of its air filter box the only hose coming off it was running into the rear gear box. It was a way more simpler air box no filter for cvt either mine on my Bali 250 has the CVT filter plus regular air filter. A way nicer set up then my 05 150 GY6 Motor had!

[fairweasel2323]

Thanks for ur help Bikedown, But looks like I got problem fixed just got to get hold of my dealer see if I can rob the drain hose off a Bali 250 parts bike he has and use better clamp so it dont fall off again or found some clear hose the right diameter and figure way to block end off so it catches oil and I can drain it when needed.

It is a drain hose. You will need to replace it because things get really messy if you simply let it drip to the open air.

Hi fairweasel,

The hose you need is simply a short piece of clear PVC (also called Tygon or vinyl) hose. It can be purchased at most "big box" building supply stores, most hardware stores, and some auto supply stores. One foot should not cost any more than a dollar; heck they might even have a remnant they they would give you for free.

The risk of leaving this port open is that it might enable dusty,dirty air to be sucked into the engine because the "oil-catch box" that the hose is connected to is also vented to the air intake hose after the air filter.

Read more: scootdawg.proboards.com/index.cgi?action=display&board=200cc&thread=49106&page=1#ixzz1sHirdceO

[fairweasel2323]

The hose is connected to the part of the air box called the OIL CATCH BOX, just a drain hose sorry for the confusion as u thought i was talking about the hose coming off the head to the air box. this drain hose hooks to port before the CVT filter and the air filter and then u have the hose coming out of air box running to the rear gear box so I was explained the area where this hose is connected is the the section of the air box they refer to as "the oil catch box" so it will drain any excess oil and collect in the hose instead of just leaking out making a mess , and keeps oil out of the other areas of the air filter box. If I was to block that port off then I would have oil in my air filter box itself and risk oil running into rear gear box big problems!