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#1
July 25th 05, 03:29 AM
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All this makes us think that the plane really is burning the oil but wouldn't the compression check yeild much lower results if it were burning that amount oil? Where's the likely suspect here? Could be worn valve guides. They won't show up on a compression check, but oil can be sucked in around the intake guide when the valve is open. Don 
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#2
July 25th 05, 03:31 AM
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You are corect... For that matter worn valve seals too...
Jon Kraus '79 Mooney 201 Don Hammer wrote: All this makes us think that the plane really is burning the oil but wouldn't the compression check yeild much lower results if it were burning that amount oil? Where's the likely suspect here? Could be worn valve guides. They won't show up on a compression check, but oil can be sucked in around the intake guide when the valve is open. Don
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#3
July 25th 05, 03:56 AM
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Check and see that the slit in the oil drain tube
is not plogged up inside the cowled area. If the slit is plugged with old oil gunk, the tube will suck oil overboard and since they stick out a bit into the airstream, you probably won't see a bunch on the belly. ANOTHER PLACE is a clogged air/oil seperator on the vacuum pump if a wet pump is installed. They can pump much oil overboard and still function.
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#4
July 25th 05, 04:09 AM
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Jon Kraus wrote:
You are correct... For that matter worn valve seals too... 'scuse me??? Which version of the "old 300" are we talking about, here? Happy Flying! Scott Skylane N92054
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