oil in the air box?

MOTOCROSS MAVERICK · December 02, 2005, 04:01:58 PM

can any body tell me why on my raptor 350 oil is leaking into my air box?

Old_School · December 02, 2005, 04:29:06 PM

Crankcase oil?

Does your quad back fire alot? You sure it's not the oil you put on the air filter?

Even if you had blowby, the oil would reach the top of the piston and plug but don't know why it would be sucked back through the carb to the air box.

-Mark

MOTOCROSS MAVERICK · December 02, 2005, 04:43:38 PM

it does not back fire. the oil is not comming out of the carb and air filter!
the oil is comming out a hose from the engine to the air box? and it is oil and it pours out!

gery350 · December 02, 2005, 05:15:39 PM

well dont know much about bikes but on cars you need a breathing system for the crankcase(pcv-positive crankcase ventilation) if you dont have the proper ventilation it will vent oil up to the airbox. cars have a pcv valve that goes bad......dont know if bikes have as well.

Old_School · December 02, 2005, 05:54:30 PM

Quote from: gery350 on December 02, 2005, 05:15:39 PM
well dont know much about bikes but on cars you need a breathing system for the crankcase(pcv-positive crankcase ventilation) if you dont have the proper ventilation it will vent oil up to the airbox. cars have a pcv valve that goes bad......dont know if bikes have as well.

Duh, why I didn't think of that. That's what it is. But didn't know that quads had them. I deleted them off my race car. You can cut and plug the hose but before you do it I'd ask around. Don't know if there is anything detrimental on quads if done.

Gery- Good thinking. U perdy smart.......... for a white guy.

-Mark

gery350 · December 02, 2005, 06:02:10 PM

Quote from: Old_School on December 02, 2005, 05:54:30 PM

Gery- Good thinking. U perdy smart.......... for a white guy. -Mark

why thank ya. i'm blushing.

2006YFZ450 · December 02, 2005, 07:39:13 PM

That used to happen to my '04 Warrior. Is it blue oil
that's leaking out? I found that on my air filter and intake
I changed the air filter and got a K&N and never happened again.

MOTOCROSS MAVERICK · December 02, 2005, 08:21:04 PM

OIL FROM THE ENGINE AND I ALREADY HAVE A K&N AIR FILTER!

PLEAS SOMEBODY WITH THE EXACT SOLUTITION PLEASE LET ME KNOW!!

Joedirt · December 02, 2005, 08:34:36 PM

On my Bike the oil goes into the airbox when it is Overfilled

Dr.Dirt · December 02, 2005, 08:37:50 PM

Quote from: Raptor700R on December 02, 2005, 07:39:13 PM
That used to happen to my '04 Warrior. Is it blue oil
that's leaking out? I found that on my air filter and intake
I changed the air filter and got a K&N and never happened again.

You are so stupid! Quit giving people advice, just stop. Seriously, you need to stop.

MOTOCROSS MAVERICK · December 02, 2005, 08:44:45 PM

IT IS NOT AN OVER FLOW BECAUSE EVER TIME I GET OFF THE TRACK I CHECK IT AND IT GETS REALLY LOW!! IF I LET IT GO THE DIP STICK WOULD GO DRY!!!!

IT HAS JUST STARTED LAST WEEK I HAVE HAD THE BIKE FOR OVER A YEAR AND THE AIR KIT FOR OVER 6 MONTHS!

#74 crf250r · December 02, 2005, 08:50:11 PM

om my xr50 i got a k&n filter and i had to get this thing called a crankcase breather so that could be the problem.

ZRIDER · December 02, 2005, 09:20:15 PM

Have you rolled it latley? Sometimes oil can leak from the crankcase breather into the airbox if the quads been upside down. Drain it out and check it again.

MOTOCROSS MAVERICK · December 02, 2005, 09:34:57 PM

NOT BEFORE IT WAS LEAKING!

I CAN CRANK IT UP RIGHT NOW AND THE OIL WILL START TO LEAK INTO THE AIR BOX AND IT WONT STOP UNTIL I TURN THE BIKE OFF!!

Honda250ex · December 02, 2005, 10:10:32 PM

Have you herd of calling the dealer!

and ask them what they think is the problem!

MOTOCROSS MAVERICK · December 02, 2005, 10:12:53 PM

THE DEALERS DONT KNOW THEIR A$$ FROM THEIR ELBOW!!!!

53yfz450 · December 02, 2005, 11:57:32 PM

replace your rings eric. remember mine does the same thing.

what im going to do is get rid of that black box on my 450 and run a hose up around the frame and let it hang. like in the dirt bikes.
the enviormental agency doesnt want the oil on the ground so thats my they made that box and to run in your air box.

Truegrit · December 07, 2005, 01:26:11 AM

Quote from: MOTOCROSS MAVERICK on December 02, 2005, 09:34:57 PM
NOT BEFORE IT WAS LEAKING! I CAN CRANK IT UP RIGHT NOW AND THE OIL WILL START TO LEAK INTO THE AIR BOX AND IT WONT STOP UNTIL I TURN THE BIKE OFF!!

Ususally some oil will come into the airbox if you are riding WOT or off camber a lot or from bring overfilled. But, if oil is being pushed out while just idling the the point its going to starve the bike of oil. You probably have a blocked oil passage. If you are leary of the dealers in your area try a motorcycle repair shop. I find they generally do better and quicker work.

gery350 · December 07, 2005, 02:55:09 AM

its obvious
ATP-they know what they're doing.
largo aint to far from them.