Rotax 912UL oil overflowing. Why?
in 912 / 914 Technical Questions
10 years ago
Dear Forumites
After the last oil change of my Hawk Arrow 2
the oil tank was overfull, at the very top of the
flat part on the dipstick. I left it at that.
Today, after landing from an uneventful 2hr
flight through light rain I noticed the smell of
oil. I found that the engine lost at least 50ml
through the oil tank vent. It was in a puddle
underneath the plane and all over the tail. The
tank was brimful. I obviously didn't add any
oil. Where does the extra volume come from?
To matters a bit more of a challenge, I'm three
hours from my home port.
The fuel pressure was low, but I put it down to the fuelpressure sensing setup that is always erratic,
but not that low. It felt like the engine revs
were unstable, but always willing to return to
full power. Temperatures were a low normal.
The oil wasn't milky but I didn't pick up a
smell of petrol. But I wasn't trying to either.
After the last oil change of my Hawk Arrow 2
the oil tank was overfull, at the very top of the
flat part on the dipstick. I left it at that.
Today, after landing from an uneventful 2hr
flight through light rain I noticed the smell of
oil. I found that the engine lost at least 50ml
through the oil tank vent. It was in a puddle
underneath the plane and all over the tail. The
tank was brimful. I obviously didn't add any
oil. Where does the extra volume come from?
To matters a bit more of a challenge, I'm three
hours from my home port.
The fuel pressure was low, but I put it down to the fuelpressure sensing setup that is always erratic,
but not that low. It felt like the engine revs
were unstable, but always willing to return to
full power. Temperatures were a low normal.
The oil wasn't milky but I didn't pick up a
smell of petrol. But I wasn't trying to either.
