Oil Consumption Problem
in 912 / 914 Technical Questions
9 years ago
Gents,
I am in need of advice.
My engine is an 800 hour 912UL. A year ago I had a very rough running engine and a small oil consumption problem. I had the engine stripped and rebuilt: an inlet valve was replaced, a new set of bearings were fitted along with a new set of oil control rings.
Since the rebuild the oil consumption has increased significantly. For example, a 2.5 hour flight last week consumed just over 300ml. I have no visible leaks and I have fitted a plastic bottle to the end of the oil tank breather pipe and there is nothing there.
I therefore conclude that the oil is most likely being burnt. Is there a quick method of determining which cylinder is causing the problem? Once I have, can I just pull that cylinder and take a look at the rings? Is the cause likely to be obvious when I look at the piston and inside the cylinder or could it be far more subtle?
From what I can tell the 912 is not renowned for oil consumption problems and for many years I didn't need to add oil between changes so I guess that something is going on inside mine.
Thanks,
Kevin
I am in need of advice.
My engine is an 800 hour 912UL. A year ago I had a very rough running engine and a small oil consumption problem. I had the engine stripped and rebuilt: an inlet valve was replaced, a new set of bearings were fitted along with a new set of oil control rings.
Since the rebuild the oil consumption has increased significantly. For example, a 2.5 hour flight last week consumed just over 300ml. I have no visible leaks and I have fitted a plastic bottle to the end of the oil tank breather pipe and there is nothing there.
I therefore conclude that the oil is most likely being burnt. Is there a quick method of determining which cylinder is causing the problem? Once I have, can I just pull that cylinder and take a look at the rings? Is the cause likely to be obvious when I look at the piston and inside the cylinder or could it be far more subtle?
From what I can tell the 912 is not renowned for oil consumption problems and for many years I didn't need to add oil between changes so I guess that something is going on inside mine.
Thanks,
Kevin
