 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
JonathanMilbank
Joined: 14 Apr 2012
Posts: 389
Location: Aberdeen area
|
 Posted: Wed May 30, 2018 1:53 pm Post subject: Oil tank gurgling (burping) |
 |
|
My 912ULS engine has done 250 hours since complete strip-down and rebuild after I bought it from an acknowledged Rotax engine expert. The three friends who share the Europa with me are all happy with how sweetly it runs. The compressions were measured very recently and are excellent (approaching 200 psi). The oil pressure is good being in the vicinity of 4 bar. BUT....
Nine times out of ten the oil drains quickly (overnight) from the tank to a level below the flat on the dipstick. This wasn't always so and has become worse over time. It used to take about a dozen compressions done quite slowly to push the oil back into the tank, while these days it can often take 50 or more compressions. Why?
My imagination is that the oil escapes past the oil pump and the rate of escape depends on the position of the pump lobes when at rest. So if the oil pressure remains good in flight, what's changed? Perhaps the oil pressure relief valve is sticking in some way when the engine's at rest? However I also appreciate that the pump and relief valve may have nothing to do with the problem.
Your experience and knowledge of likely causes would be gratefully received.
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
 |
rampil
Joined: 04 May 2007
Posts: 870
|
| Posted: Sat Jun 02, 2018 2:21 pm Post subject: Re: Oil tank gurgling (burping) |
|
|
absolutely normal behavior
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
_________________
Ira N224XS |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
