Oil comming out of Air box

[theoriginalboom]

Anyone have any idea why i have oil leaking out of my airbox. it's leaking down onto the belt cover and seems to be getting worse. any help would be appreciated.

thanks
Steve

[mikal]

Just a guess, but maybe you should check your hoses, and maybe clean your carb.

[Nicolas]

I heard flooding the engine because of poor starts will get a bunch of oil in the airbox; when I got mine it was drenched. Poor baby... ;(

[theoriginalboom]

i don't think the engine is flooding cause it's comming out while im driving

[mikal]

Anyone have any idea why i have oil leaking out of my airbox. it's leaking down onto the belt cover and seems to be getting worse. any help would be appreciated.

thanks
Steve

Is this a prebug?

[theoriginalboom]

what's a pre bug? it's a 2000 model the older style. I guess no one else has had this problem befor.

[J Weber]

I have a 98 prebug with the same issue; it's not a huge leak, but noticeable after a 16 mile round trip to & from work. I removed the airbox cover and repositioned the gasket around the edge and still get a small amount of leakage. Any suggestions?

[thats nice]

ALL zumas older then 2002 leak oil out of the carb- all over trans. case. (owned a 1999 & 2001 zuma)

[theoriginalboom]

So is there any way to fix it. mine leaks pretty bad, It gets my airfilter soaked.

[str8dum]

buy a fuel injected scooter. carbs will always pulse out fuel and oil onto the filter.

[OldGuy1]

That's funny. My '01 Vino with 14,000 miles doesn't.

[thats nice]

yes but yr model is different.
i know of no other models or yrs by yamaha that do that.
my 2002 zuma has not leaked oil into the air box.

another thought if you have messed with yr a/f mixture screw you and you saw a increase of oil on trans/airbox then you may be too rich. :cylon:

[yammybws]

Interesting note, I was doing a rehaul on the clutch and reeds and had my bike parked for about a week with the carb undone from the airbox and crankcase but all lines still hooked up. After a few days I noticed a very small puddle of oil and it was dripping from the carb, not from where the oil line connects but rather the carb throat. There is an oil pump, but I'm convinced when the bike is parked, gravity will drip oil a very small amount into the carb, and this then could come into the airbox, I've never had that happen but the oil on my garage floor proved that somehow oil is getting from the tank to the carb when the bike isn't running. My model yr is 2005 btw.

[thats nice]

i think that only happens when you have the carb disconnected from the airbox and manifold but when all is installed there will be zero leaks from a well maintained 2002- 2005 Zuma.

note that if you off-road the zuma that the intake manifold wiggles and that causes some leaking from the base of the manifold i have fixed by addind a stock gasket from the reed block...
always order extra gaskets :D