Unable to purge the system
in 912 / 914 Technical Questions
8 years ago
Hello Rotax owners.
I am new to this forum/list, and need some help from you experts. I purchased a used Rotax 912 uls engine, with only few hours flown. After completing my Zenith 701 building, I purged the oil system according to the video on this site. When I try to move the oil back into the oil reservoir, I never hear the gurgle sound, but only air hissing from the valve cover on number 3 cylinder, and oil leaking. I have installed new o-rings on all covers, so they should be normal seal.
I removed the heads and cylinders on number 1 and 3 and inspected the hydraulik valve lifters, and everything looked normal. No wear.
Can anyone give me any advise on what could be causing this problem?
Thank you in advance,
Johann G.
I am new to this forum/list, and need some help from you experts. I purchased a used Rotax 912 uls engine, with only few hours flown. After completing my Zenith 701 building, I purged the oil system according to the video on this site. When I try to move the oil back into the oil reservoir, I never hear the gurgle sound, but only air hissing from the valve cover on number 3 cylinder, and oil leaking. I have installed new o-rings on all covers, so they should be normal seal.
I removed the heads and cylinders on number 1 and 3 and inspected the hydraulik valve lifters, and everything looked normal. No wear.
Can anyone give me any advise on what could be causing this problem?
Thank you in advance,
Johann G.
