John Deere d110 oil leak

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May 1, 2016
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It appears my 2011 JD d110 is leaking (blowing) oil at the fuel pump vacuum line. The oil level is OK, maybe even a little low. My reason to believe the problem is at the fuel pump vacuum line is after mowing oil is on the fuel pump, the vacuum hose, the frame below the fuel pump and on the top of the mower deck below the fuel pump and frame. Any ideas on what is wrong?

Thanks.
 

bertsmobile1

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:welcome:

Blowing oil out of the fuel pump is because there is ether too much crank case compression or the crankcase vent is blocked.
Usual cause is a leaking head gasket followed by bad rings or hole in piston.

Take off the air filter, start the engine and put your finger over the breather .
If it is puffig away then most likely it is the head.
If it is both blowing and sucking or doing nothing the breather valve is stuck or broken.
 
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