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Oil Pressure warning?

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Thumper

Joined: 24 Aug 2008
Posts: 46
Location: Oakland TN.

Posted: Mon Feb 25, 2013 6:45 am Post subject: Oil Pressure warning?

Roger and others.

I have been flying this engine, 912ULS, 2000 model year about 1 year, 635 hours total on the engine.  One cold day this winter I started getting a high oil pressure alarm intermittently?  Oil temps running consistent 160 degrees, 60psi, OAT in the 40's.  Warm up is normal, fly for a little while and I will start getting a high pressure warning on my GRT EIS.  It will show low 90's for a few seconds then bounce around between 60 and 90 occasionally going over 90 and triggering the alarm.  I can find no pattern?  I changed the oil to a lighter weight oil (not filter yet) as a test but no difference?  What are the possibilities?  If it was going low I would be more concerned.  It has happened each of the past three flying weekends but only occasionally.

Thanks ahead of time.

Dennis Long

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_________________
Dennis Long
Oakland TN
2000 Aeroprakt A20 Vista Cruiser, 2016 A22LS Aeroprakt
Previously Kolb Mark IIIC, 94 Firestar, 84 Ultrastar.
1200+hours since 1/1/2009

Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Mon Feb 25, 2013 7:08 am Post subject: Re: Oil Pressure warning?

Hi Dennis,



Four common items to look at here and none a big deal.

First the oil pressure wire may be loose on the sender so make sure it is tight. The second item here that cause high pressure swings is a poor ground. This is another very common problem. Check your grounds. The third item is the sender itself is usually the culprit. Go to egauges.com and buy a new one for about $30 if the wire wasn't loose. Third you have a 13 year old engine. You may want to change the oil pressure regulator ball bearing, spring and plug screw to the newer style regulator cone. It's about $80 and takes 5 minutes to change.



It will be one of these.

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_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

davidjoyce(at)doctors.org
Guest

Posted: Mon Feb 25, 2013 7:19 am Post subject: Oil Pressure warning?

Dennis, I had the same thing in the middle of nowhere in 

rural France and my Flydat was much aggravated! It turned 

out that the wire to the sender was broken - the no signal 

default reading being a high pressure, so odds on it being 

a wiring defect.

Regards, David Joyce, G-XSDJ

On Mon, 25 Feb 2013 06:45:32 -0800

  "Thumper" <dlong1957(at)yahoo.com> wrote:

 	  Quote: 	
		   

<dlong1957(at)yahoo.com>

 

 Roger and others.

 I have been flying this engine, 912ULS, 2000 model year 

about 1 year, 635 hours total on the engine.  One cold 

day this winter I started getting a high oil pressure 

alarm intermittently?  Oil temps running consistent 160 

degrees, 60psi, OAT in the 40's.  Warm up is normal, fly 

for a little while and I will start getting a high 

pressure warning on my GRT EIS.  It will show low 90's 

for a few seconds then bounce around between 60 and 90 

occasionally going over 90 and triggering the alarm.  I 

can find no pattern?  I changed the oil to a lighter 

weight oil (not filter yet) as a test but no difference? 

 What are the possibilities?  If it was going low I would 

be more concerned.  It has happened each of the past 

three flying weekends but only occasionally.

 Thanks ahead of time.

 Dennis Long

 

 --------

 Dennis Long

 Oakland TN

 2000 Aeroprakt A20 Vista Cruiser

 Previously Kolb Mark IIIC, 94 Firestar, 84 Ultrastar.

 600+hours since 1/1/2009

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=394984#394984

 

 

 

 

 

 

 

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joeing701(at)simnet.is
Guest

Posted: Mon Feb 25, 2013 7:37 am Post subject: Oil Pressure warning?

Hello Roger.



What is the part number for the oil pressure sender for the Rotax 912 uls on the egauges.com page?

Appreciate the help.

Johann G.

Iceland.



----- Upprunaleg skilaboÃ° -----

FrÃ¡: "Roger Lee" <ssadiver1(at)yahoo.com>

Til: rotaxengines-list(at)matronics.com

Sent: MÃ¡nudagur, 25. FebrÃºar, 2013 15:08:10

Efni: Re: Oil Pressure warning?






Hi Dennis,



Four common items to look at here and none a big deal.

First the oil pressure wire may be loose on the sender so make sure it is tight. The second item here that cause high pressure swings is a poor ground. This is another very common problem. Check your grounds. The third item is the sender itself is usually the culprit. Go to egauges.com and buy a new one for about $30 if the wire wasn't loose. Third you have a 13 year old engine. You may want to change the oil pressure regulator ball bearing, spring and plug screw to the newer style regulator cone. It's about $80 and takes 5 minutes to change.



It will be one of these.



--------

Roger Lee

Tucson, Az.

Light Sport Repairman - Maintenance Rated

Rotax Repair Center - Heavy Maint. Rated

Home 520-574-1080  TRY HOME FIRST

Cell 520-349-7056





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=394986#394986

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pestar

Joined: 11 Apr 2007
Posts: 61
Location: Auckland, New Zealand

Posted: Mon Feb 25, 2013 11:25 am Post subject: Re: Oil Pressure warning?

Had exactly the same symptoms, it was the sender.  Roger has added extra things to check for but if I was a betting man I would be going for a faulty sender.



Cheers Peter

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_________________
Peter Armstrong
Auckland, New Zealand
DynAero MCR-4S (Do not shoot me Smile

Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Tue Feb 26, 2013 7:30 am Post subject: Re: Oil Pressure warning?

It is the 360-004 for the single pole (single wire) sender

and the 360-430 for the double pole (two wire) sender. Both are 0-150 psi senders.

The fuel sender is the 360-043 0-30 psi.



http://www.egauges.com/vdo_send.asp?Sender=150PSI_10Bar

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_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Tue Feb 26, 2013 7:31 am Post subject: Oil Pressure warning?

Don't rule out the EIS. GRT make a great product, but my EIS gets grumpy in cold weather and the altimeter resets to -2,850 ft. I'd have thought subterranean flying would be darker, but I can see no difference except that the altimeter reading gets smaller as I ascend. 



Rick Girard

do not archive



On Mon, Feb 25, 2013 at 8:45 AM, Thumper <dlong1957(at)yahoo.com (dlong1957(at)yahoo.com)> wrote:

  	  Quote: 	
		  --> RotaxEngines-List message posted by: "Thumper" <dlong1957(at)yahoo.com (dlong1957(at)yahoo.com)>

  

 Roger and others.

 I have been flying this engine, 912ULS, 2000 model year about 1 year, 635 hours total on the engine.  One cold day this winter I started getting a high oil pressure alarm intermittently?  Oil temps running consistent 160 degrees, 60psi, OAT in the 40's.  Warm up is normal, fly for a little while and I will start getting a high pressure warning on my GRT EIS.  It will show low 90's for a few seconds then bounce around between 60 and 90 occasionally going over 90 and triggering the alarm.  I can find no pattern?  I changed the oil to a lighter weight oil (not filter yet) as a test but no difference?  What are the possibilities?  If it was going low I would be more concerned.  It has happened each of the past three flying weekends but only occasionally.

  Thanks ahead of time.

 Dennis Long

 

 --------

 Dennis Long

 Oakland TN

 2000 Aeroprakt A20 Vista Cruiser

 Previously Kolb Mark IIIC, 94 Firestar, 84 Ultrastar.

 600+hours since 1/1/2009

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=394984#394984

 

 

 

 

 

 

 

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