oil leaking out of air cleaner cover

jgb shine

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Hi, can anyone tell me why i have oil leaking out of air cleaner cover on my honda fr500 tiller. Runs great for 5 mins then as oiil gushing out of cleaner the motor dies.
Thanks Mike
 

bertsmobile1

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The breather is blocked
or
The head gasket is bown
or
The float is sticking and filling the sump with fuel
 

jgb shine

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Thanks Bert,
If the float was sticking would oil be leaking out of air cleaner cover or would it be purely gas? I dont know what a breather is, can you point me in the right direction?
Thanks again,MIke
 

bertsmobile1

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Fuel leaks into the carb then into the cylinder then into the sump and fills it so when the engine runs, it runs a bt slow and blows the oil/fuel mix out of the brether / vent which is the tube behind the air cleaner.
Where it goes into the engine ( usually into the rocker cover ) there is a one way valve that can get stuck.
leaky head gasket will make a wheese when you pull the cord and the pull cord will not be as hard to pull as usual.
 

jgb shine

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Hey Bert, thanks so much for your insight, it looks like that 1 way valve might be the culprit, when i checked the oil a gas and oil mixture came spewing out,can you explain what this one way valve looks like and where it is located?

Thanks again, Mike
 
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