Gas in the oil ?

[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...

I do not know but could look on line at the engine part diagram.

Where would the pump be located on the motor ?

Thanks - Rick

 

[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...

I just looked on line and the fuel pump is attached to the outside of the block after the filter just before the carbs.

 

[Raw Dodge]

Is there a rubber line from the fuel pump to a fitting on the crankcase anywhere? If so remove it and see if there's fuel in it....you can also install a small clear section of line and when it's running look and see if fuel is in it. Any fuel in that line is bad. Replace the pump if there's fuel in the pulse line.

 

[Rickcin]

Is there a rubber line from the fuel pump to a fitting on the crankcase anywhere? If so remove it and see if there's fuel in it....you can also install a small clear section of line and when it's running look and see if fuel is in it. Any fuel in that line is bad. Replace the pump if there's fuel in the pulse line.

Not understanding! From the filter the black tube goes to a circular device mounted to the block, that is a fuel pump ??
Then the hose goes to the carbs, I guess since it is not visible?

 

[Raw Dodge]

Yes circular thing on the block is the fuel pump.It needs the crankcase pulse to operate, that line could come in from behind the pump thru the shroud or from a different point. That line could be the point of fuel entering the crankcase.Most of those pumps are under 50.00.I have a few spares laying around, they are pretty universal...if I suspect a bad pump,Ill zip tie a spare to the original and hook it up and see if my oil stops getting diluted.

 

[Rickcin]

Yes circular thing on the block is the fuel pump.It needs the crankcase pulse to operate, that line could come in from behind the pump thru the shroud or from a different point. That line could be the point of fuel entering the crankcase.Most of those pumps are under 50.00.I have a few spares laying around, they are pretty universal...if I suspect a bad pump,Ill zip tie a spare to the original and hook it up and see if my oil stops getting diluted.

This is great information since eI am not knowledgeable on this at all. Does it make sense that it is leaking while the gas valve is off and the mower has not been running ?

I will include a photo.

Thanks again,

Rick

 

[Raw Dodge]

If the gas valve is off it doesnt make sense at all. It makes more sense if the gas was on..if the fuel pump is leaking than it will likely suck fuel into the crankcase when its running.