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Rotax 912 UL high oil pressure

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Jeyoung65(at)aol.com
Guest

Posted: Tue Oct 02, 2007 12:20 pm Post subject: Rotax 912 UL high oil pressure

Not sure where the pressure transmitter is located in your  engine system  but you may have a clogged oil filter.  Jerry of  Ga



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dougsnash(at)yahoo.com
Guest

Posted: Tue Oct 02, 2007 2:37 pm Post subject: Rotax 912 UL high oil pressure

HI Ed, welcome to the list, a couple of suggestions

have been made about a faulty pressure transmitter. 

That is a good thing to think about but it might also

be temperature related.  



I'm not flying my 912UL yet but one thing I have heard

about these beasts is that they have quite a bit of

oil cooling capacity.  Is it possible you are running

the oil temp too low and causing your pressure to be

on the high side?



Doug MacDonald

CH-701 Scratch builder 

NW Ontario, Canada

--- Edward Micallef <edmica2(at)yahoo.com> wrote:



 	  Quote: 	
		   

 <edmica2(at)yahoo.com>

 

 [Rolling Eyes] I am a new owner of a Zodiac 601 HDS

 The A/C has a TTEA of 150 Hrs.. The engine is a

 Rotax 912 UL # 4401716..I am used to Lyconing

 engines but Rotax is new to me. Lately I have

 noticed that the oil pressure is higher than what is

 specified in the   manual. It is supposed to be

 22-72 psi , when I am turning about 5000 rpm it

 fluctuate over 80psi. I can't find any thing about

 it in the trouble shooting about high oil

 pressure..Is there any body out there that   had a

 similar problem? Any help will be greatly 

 appreciated...Ed

 


	


       

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Edward Micallef

Joined: 30 Sep 2007
Posts: 5

Posted: Tue Oct 02, 2007 10:00 pm Post subject: Re: Rotax 912 UL high oil pressure

[quote="Jeyoung65(at)aol.com"]Not sure where the pressure transmitter is located in your  engine system  but you may have a clogged oil filter.  Jerry of  Ga

Thanks Jerry, I will check the oil filter although it has only 10 hrs since it was changed...Regards Ed

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Edward Micallef

Joined: 30 Sep 2007
Posts: 5

Posted: Tue Oct 02, 2007 10:05 pm Post subject: Re: Rotax 912 UL high oil pressure

 	  dougsnash(at)yahoo.com wrote: 	
		  HI Ed, welcome to the list, a couple of suggestions

have been made about a faulty pressure transmitter. 

That is a good thing to think about but it might also

be temperature related.  



I'm not flying my 912UL yet but one thing I have heard

about these beasts is that they have quite a bit of

oil cooling capacity.  Is it possible you are running

the oil temp too low and causing your pressure to be

on the high side?



Doug MacDonald

CH-701 Scratch builder 

NW Ontario, Canada

--- Edward Micallef <edmica2> wrote:



 	  Quote: 	
		   

 <edmica2>

 

 [Rolling Eyes] I am a new owner of a Zodiac 601 HDS

 The A/C has a TTEA of 150 Hrs.. The engine is a

 Rotax 912 UL # 4401716..I am used to Lyconing

 engines but Rotax is new to me. Lately I have

 noticed that the oil pressure is higher than what is

 specified in the   manual. It is supposed to be

 22-72 psi , when I am turning about 5000 rpm it

 fluctuate over 80psi. I can't find any thing about

 it in the trouble shooting about high oil

 pressure..Is there any body out there that   had a

 similar problem? Any help will be greatly 

 appreciated...Ed

 

Thank you Doug, I will check the oil temp and make a note where it it is when the oil pressure is high....Ed 

	


       

Pinpoint customers who are looking for what you sell. 

http://searchmarketing.yahoo.com/

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macleod(at)eagle.ca
Guest

Posted: Wed Oct 03, 2007 7:36 am Post subject: Rotax 912 UL high oil pressure

Edward:



I had a similar problem with my 912S a few years ago.  At first the

pressure would jump from 50 psi to 90 psi stay there for a few seconds

then drop back to 50.  A few hours later it would go to 90psi and stay

there.  The problem turned out to be a loose connection on the sender. 

NOTE: when I first checked the sender connections they seemed ok,  later

after I disconnected the sender and did a good reconnection the problem

went away.



Mike

601XL waiting for Rotax FWF



 	  Quote: 	
		  The engine is a Rotax 912 UL # 4401716... Lately I have noticed that the oil

 pressure is higher than what is specified in the   manual. It is supposed

 to be 22-72 psi , when I am turning about 5000 rpm it fluctuate over

 80psi.

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pchapman(at)ionsys.com
Guest

Posted: Wed Oct 03, 2007 2:39 pm Post subject: Rotax 912 UL high oil pressure

At 15:43 02-10-07, you wrote:

 	  Quote: 	
		  



[Rolling Eyes] I am a new owner of a Zodiac 601 HDS The A/C has a 

TTEA of 150 Hrs.. The engine is a Rotax 912 UL # 4401716..I am used 

to Lyconing engines but Rotax is new to me. Lately I have noticed 

that the oil pressure is higher than what is specified in 

the   manual. It is supposed to be 22-72 psi , when I am turning 

about 5000 rpm it fluctuate over 80psi. I can't find any thing about 

it in the trouble shooting about high oil pressure..Is there any body out


	


Another possible issue regarding oil pressure changes:



I found that changing to an actual Rotax oil filter, from one that is 

simply compatible, seems to have increased the oil pressure somewhat.



Have others found this to be correct?



Peter Chapman

Toronto, ON

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goodings(at)yorku.ca
Guest

Posted: Wed Oct 03, 2007 5:55 pm Post subject: Rotax 912 UL high oil pressure

When we first flew our 601HD with R912S, the oil pressure was LOW.  It

turned out to be the pressure gauge or sender, I don't know which.  It

reads 2/3 of the correct value over a considerable range (20-40 psi).

This was determined by putting a second known accurate pressure gauge

simultaneously in the oil line.  My point is, don't assume your gauge

reading is correct!  There may be nothing wrong with the oil pressure.



John Goodings, C-FGPJ, CH601HD with R912S, Ottawa Carp/Toronto.

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Edward Micallef

Joined: 30 Sep 2007
Posts: 5

Posted: Wed Oct 03, 2007 6:27 pm Post subject: Re: Rotax 912 UL high oil pressure

To all who responded to my problem with the high oil pressure, thank you I will check each one out till I find the the right fix and of  course keep you all informed..the weather is changing in the NW and I will have to check this out in between rain showers...Ed :

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Edward Micallef

Joined: 30 Sep 2007
Posts: 5

Posted: Tue Oct 30, 2007 8:57 pm Post subject: Re: Rotax 912 UL high oil pressure

:  :

 



Hi you all, I have changed the Rotax oil filter with an other Rotax oil filter and drained the oil witch was all syentec and replaced   with a 10w 40  oil    recommend by Rotax. I also removed the sender and bench tested . Checked out good  flew the plane   for 3hrs , the oil pressure is mostly in the 80psi at 5k rpm ..at 2k rpm. it drops to around 65psi...at one time when I let the rpm go to 58k the oil psi went down to about 65psi..  The engine runs great .  any comments?.  Keep your air speed up and happy landings...Ed

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