Gas in the oil ?

[Rickcin]

I was just given ( actually loaned ) an older eXmark, a 2005 with a Kawasaki 15hp V engine. It runs fine but after using it the engine leaked fluid that appears to a gas oil combination. I immediately changed the oil and it appeared to be half gas ?

After filling with oil the mower ran fine, started right up and no blue smoke like a blown gasket or something, seemed to be fine. This morning when I checked the mower, it appears that it is leaking again somewhere adjacent to the center of the engine ( it is a twin cyl.) where the throttle & choke cables connect. ( I also had the gas valve turned off )

Any suggestions ??? Could gas be leaking internally into the crankcase ??

Thanks,
Rick

 

[Rivets]

Sounds like the float needle is not seating properly. This will cause the carb to overflow, allowing fuel to enter the cylinder and then into the crankcase. Fix, rebuild the carb with a new needle and seat.

 

[Rickcin]

I guess that would explain why the oil check showed the fluid being overfilled but why is it leaking on the floor under the mower ?

 

[Parkmower]

Sounds like the float needle is not seating properly. This will cause the carb to overflow, allowing fuel to enter the cylinder and then into the crankcase. Fix, rebuild the carb with a new needle and seat.

And he said he shut off fuel valve. Why would needle flood crankcase if fuel was cut off.

 

[Rickcin]

And he said he shut off fuel valve. Why would needle flood crankcase if fuel was cut off.

Fuel left in the carb ??

 

[Parkmower]

Fuel left in the carb ??

Yeah there's some left in the line and carb after shutting off fuel valve.

 

[SeniorCitizen]

Since nearly every valve ever made eventually fails, replace the shut off valve also and while you're there in that department it would be a good idea to replace the fuel line also since it is 7 years old.

 

[Raw Dodge]

Does it have a crankcase pulse fuel pump? If so the diaphrams could be leaking slowly filling the crankcase with fuel while sitting or running...

 

[Rickcin]

Since nearly every valve ever made eventually fails, replace the shut off valve also and while you're there in that department it would be a good idea to replace the fuel line also since it is 7 years old.

That makes a whole lot of sense!

 

[Rickcin]

Does it have a crankcase pulse fuel pump? If so the diaphrams could be leaking slowly filling the crankcase with fuel while sitting or running...

Still unsure if it is leaking into the crankcase. I need to let it sit and keep an eye on it however it is leaking on the floor and seems to be coming from the areas where the cables connect to the carb.
It is a difficult area to see.