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Old 11-03-2022, 07:33 PM   #1
Thedude4355   Thedude4355 is offline
 
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2005? Pantera 125

So, this old bike was sitting behind a neighbors barn under a tarp. I've cleaned it up, and I can fire it up, but as soon as it starts it throws oil out of a vent on top of the crank case, under the carb. I'm sure it's supposed to be a vent, but I'm not sure if it requires a valve? Like a PCV valve on a car? Or is it just meant to have a hose on it? The rubber hose that was on it was rotted off and isn't anywhere to be found.


 
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Old 11-03-2022, 09:30 PM   #2
Thumper   Thumper is online now
 
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Overfilling could cause this
Drain the oil (overnight!). Replace with 900 to 1000 mL of a good clutch friendly oil. Then try again.


 
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Old 11-03-2022, 11:16 PM   #3
dirtbkr188   dirtbkr188 is offline
 
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...And run the (missing) crankcase breather hose down the back of the engine between the frame and the swingarm


 
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Old 11-05-2022, 10:13 AM   #4
alex_in_az   alex_in_az is offline
 
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Quote:
Originally Posted by Thedude4355 View Post
So, this old bike was sitting behind a neighbors barn under a tarp. I've cleaned it up, and I can fire it up, but as soon as it starts it throws oil out of a vent on top of the crank case, under the carb. I'm sure it's supposed to be a vent, but I'm not sure if it requires a valve? Like a PCV valve on a car? Or is it just meant to have a hose on it? The rubber hose that was on it was rotted off and isn't anywhere to be found.
I had one of those, bought it from PEP boys for $999. I ended up putting a 200cc engine in it and turning it into a cafe racer
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Old 11-05-2022, 03:54 PM   #5
culcune   culcune is offline
 
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Quote:
Originally Posted by alex_in_az View Post
I had one of those, bought it from PEP boys for $999. I ended up putting a 200cc engine in it and turning it into a cafe racer
I remember your build thread. Somewhere here on Chinariders
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