Needed: airbox oil problem solution

CheapThrills · 03-25-2021, 10:33 PM

Hello everyone,

During the breakin period I noticed the air box would get oil, figured from crank/pcv breather line. To prevent overflow I periodically open the air box drain into my recycle catch pan. Is there an easy fix to prevent the oil from collecting in the air box?

Thx!!!

Megadan · 03-25-2021, 11:32 PM

The easiest fix is to put a check valve/pcv valve in the line. It won't stop all of it, but it helps.

LeroyDavid · 03-25-2021, 11:59 PM

Disconnect it from the airbox, attach a paper filter. Alternatively, many racers who use the cg engine mold a tube that passes through a filter to control excess then discharges directly onto the chain. Very little oil escapes the engine unless connected to an airbox. Cg engines have no need for vacuum crankcase vents unless you're passing smog.

TxTaoRider · 03-26-2021, 09:12 AM

I haven't found any oil in my airbox yet. Strange that some do and some dont. Maybe oil level has something to do with it?

franque · 03-26-2021, 12:32 PM

Yep, when overfilled it pukes out of the breather into the airbox.

03-25-2021, 10:33 PM	#1
CheapThrills Join Date: Jan 2021 Location: Lehigh Valley Area Posts: 153	Needed: airbox oil problem solution Hello everyone, During the breakin period I noticed the air box would get oil, figured from crank/pcv breather line. To prevent overflow I periodically open the air box drain into my recycle catch pan. Is there an easy fix to prevent the oil from collecting in the air box? Thx!!! __________________ - My 3 Bikes: 1. TaoTao TBR7 2. Boom Vader Gen 2 (BD125-10) 3. 1978 Suzuki SG750 --------------------------------------------- Testing a YouTube Channel
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03-25-2021, 11:32 PM	#2
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,074	The easiest fix is to put a check valve/pcv valve in the line. It won't stop all of it, but it helps. __________________ Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124
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03-26-2021, 09:12 AM	#4
TxTaoRider Join Date: Oct 2020 Location: Flower Mound Texas Posts: 904	I haven't found any oil in my airbox yet. Strange that some do and some dont. Maybe oil level has something to do with it? __________________ 2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene"
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03-25-2021, 11:59 PM	#3
LeroyDavid Join Date: Mar 2021 Posts: 3	Disconnect it from the airbox, attach a paper filter. Alternatively, many racers who use the cg engine mold a tube that passes through a filter to control excess then discharges directly onto the chain. Very little oil escapes the engine unless connected to an airbox. Cg engines have no need for vacuum crankcase vents unless you're passing smog.
	0

03-26-2021, 12:32 PM	#5
franque Join Date: Nov 2017 Location: Marseille, France -> Conakry, Guinea Posts: 1,481	Yep, when overfilled it pukes out of the breather into the airbox.
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