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Discussion Starter #1
Im trying to help my friend figure out whats wrong with his bike
The two hoses that run from the Carb, Seems to be leaking massive amount of oil. I was thinking a part fell off, due to the fact that the hoses lead to nowhere.

I've taken some pictures. I need all the help I can get

http://images.zuup.com/pictures/13/57/46/485618-500.jpg

http://images.zuup.com/pictures/13/57/57/485619-500.jpg

http://images.zuup.com/pictures/13/57/70/485620-500.jpg

http://images.zuup.com/pictures/13/57/78/485621-500.jpg

http://images.zuup.com/pictures/13/57/88/485622-500.jpg

http://images.zuup.com/pictures/13/57/88/485623-500.jpg
 
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Discussion Starter #2
pics don't load. what bike is it?

hoses from the carbs shouldn't be leaking oil. as in, there shouldn't be oil going to the carbs. are the hoses actually from the airbox? they could be your drains. if the airbox is full of oil, there could be a pcv or blowback issue.
 

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A.G.A.T.T.
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i got the pics to open.... here they are. sorry i can't help with the tech stuff.

But i agreee with Doug, these hoses aren't coming from your carb.
 
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Yea. If your airbreather or, crankcase breather hose that leads to your airbox, That simply sounds like your friend put a bit too much oil in the bike. or a bit of blowback. check the oil level again like he said, and you may have to change it, or drain a bit if your up to it:D
 
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Discussion Starter #7
looks ilke the blowback hose to me..you sure it's coming from teh carbs?
 
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Discussion Starter #8
Possible from the head, or valve cover
Theres absolutley no oil in the bike, He didn't change the oil nor did anything mechanical with the bike
 

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it's not really a leak. it's definitely an overflow tube.

Are you sure the tube is not contected to the air box? take the tank off and clean the inside of the air box and with the tank off you'll be able to see where the hose goes too

oh and if there's no oil in the bike, you probably shouldn't turn it on.
 
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Discussion Starter #10
Ok i've just learned he layed down the bike on the right side, And after comming home, the bike was leaking oil
Started this morning, smoked a little bit at idle, Rev'ed to 5k, it would blow out a blue smoke screen
 
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Discussion Starter #11
definately oil in the airbox. the engine will vent into the airbox for pollution control. if he laid it down, oil went thru the vent into the airbox, and it's now recirculating back into the engine and causing the blue exhaust.

he will need to clean the airbox out, and chances are get a new filter, if it is completely gummed up with oil.
 

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It's likely smoking like crazy due to the oil in the airbox and soaked into the filter. He needs to clean all this up. It won't just go away all by itself. And it's possible that the plugs are fouled enough that a new set would be a decent idea.
 
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Discussion Starter #13
Thx guys
Checked the air box and air filter, the bottom of the fitler was drenched in oil. Cleaned it out, Checked the Spark plugs and they were fouled, due to missfireing at high rpm's

Would Pacific Yamaha Carry Air Filter, Spark Plugs, and Oil filter?
 

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truong said:
Thx guys
Checked the air box and air filter, the bottom of the fitler was drenched in oil. Cleaned it out, Checked the Spark plugs and they were fouled, due to missfireing at high rpm's

Would Pacific Yamaha Carry Air Filter, Spark Plugs, and Oil filter?
Those are the most common parts that dealers should have in stock. (assuming the bike is a yamaha and is not imported)
 

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It's a Yamaha isn't it?
 
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Discussion Starter #16
Alright, After cleaning up the air box, I picked up a new air filter, spark plugs and changed the oil on the bike, Ran it for about half and hour
During this time, The bike was back firering from one side only

Anyone know whats going on?
 

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At this point it's time to look for fall related damage. Look for the carbs being sprung from out of the little rubber joiners, exhaust system damage, headers not sealing at the head any more, etc.
 
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