The brass circle is a sintered bronze air filter.
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I'm At A Loss!!!
- Thread starter jetsticks
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Export threadGord Baker
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- Aug 21, 2018
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Is there a Crankcase Vent that may be plugged? Oil overfilled?The breather hose looks fine. I took it off and inspected it.
I can't see any holes. I put it in a bucket of water and blew air into it and I got no bubbles. I'm pretty sure it's coming from the pump itself.Guy, can you see tiny holes in a black rubber hose? It needs to be pressure tested maybe shooting soapy water at it.
"Looking" at most mower parts doesn't cut it for a true test.
I don't believe so but I will check. Thanks.Is there a Crankcase Vent that may be plugged? Oil overfilled?
Interesting ideas that I will try. One question: When doing the pressure test with my hand, should I feel a vacuum trying to suck air or should it be no suction at all?It is a fuel pump. Oil emitted from that or lines means one of several issues. The breather controls crankcase vacuum. If it fails as a check valve, excessive loss of crankcase vacuum happens and flow increases with it able to carry a mist of oil out the line thru the pump and usually on to the air filter cavity as well. Another possible problem is a head gasket failure which then adds compression pressure to the crankcase over powering the breather. Another most common problem is oil over full or diluted by gas. If over full or very thin put a drop of oil on a piece of paper and wait 5 min to see if one consolidated ring is shown or gas creates a secondary ring which indicates gas dilution caused by a carb float problem. some find a flammability test of the oil defining as well. A lighter to the freshly dipped metal dipstick is ok for a badly diluted oil. The fact that oil appears under PTO load is a sign that all of the above are possible. Another quick test requires two people. remove the dip stick and seal the opening with your hand. Have someone start the cold engine and sense a vacuum or pressure. The only value of this test is proof of pressure or lack of vacuum, now you have to find the cause. Also make sure the oil is not hot for this test and not over filled. A compression test is not truly valuable to prove a bad head gasket, in stead a leak down test is needed. Short of that, prove all else not at fault and replace the head gasket. You can buy a manual for the engine. Enjoy.
No to both. I had been running the mower since spring after it's initial tune up. I haven't had the problem until now and I haven't added any oil to the engine since this spring.Is there a Crankcase Vent that may be plugged? Oil overfilled?