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Oil pressure issues

Matronics Email Lists Forum Index -> RotaxEngines-List

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gfmjr_20(at)hotmail.com
Guest

Posted: Wed Nov 01, 2006 4:31 am Post subject: Oil pressure issues

Hi Folks--

  I'm looking for some ideas as to why I'm seeing intermittent hi oil 

pressure on my 912uls.  Itis installed on a Zodiac 601XL and currently in 

initial flight testing with about 5 hours on it.  Everything was fine for 

the first 3.5 hours.  Current symptoms are that on start up and take off 

everything is in the green at about 55-66psi.   Once I reach altitude and 

try to reduce throttle the oil pressure goes intermittently to the red at 

78-98psi.  If I throttle back up the pressure goes back to the green. 

Returning to the field and after landing the pressure is again in the red.

  Thanks for any ideas



George



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rmcmill(at)zoominternet.n
Guest

Posted: Wed Nov 01, 2006 5:06 pm Post subject: Oil pressure issues

hi George

what kind of oil filter are you using? and have you checked your oil 

pressure with a different kind of gage(mechanical type) verses electric 

sender type?. some times bypass in non rotax filter drags a little and 

causes this.

---

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gfmjr_20(at)hotmail.com
Guest

Posted: Wed Nov 01, 2006 6:09 pm Post subject: Oil pressure issues

Filter is rotax. Haven't tried another type of gauge yet

[quote]From: "BOB MCMILLIN" <rmcmill(at)zoominternet.net>

Reply-To: rotaxengines-list(at)matronics.com

To: <rotaxengines-list(at)matronics.com>

Subject: Re: Oil pressure issues

Date: Wed, 1 Nov 2006 20:05:14 -0500

<rmcmill(at)zoominternet.net>

hi George

what kind of oil filter are you using? and have you checked your oil 

pressure with a different kind of gage(mechanical type) verses electric 

sender type?. some times bypass in non rotax filter drags a little and 

causes this.

---

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jodel(at)nildram.co.uk
Guest

Posted: Thu Nov 02, 2006 1:27 am Post subject: Oil pressure issues

Hi,



I'm not sure what type of gauge you are using but if you have the VDO type

that is supplied with the 91x series in Europe then note that when there is

power to the gauge but no connection to the sender the gauge shows full

scale (the temp gauges show zero in this case).

Check that you do not have a poor connection to the sender or a faulty

sender.



Simon



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gfmjr_20(at)hotmail.com
Guest

Posted: Fri Nov 03, 2006 12:17 pm Post subject: Oil pressure issues

oil pressure unit and contact



Simon--

  thanks for the suggestion.  I've been in contact with Lockwood aviation 

and that also was one of their suggestions.



George



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Roger Lee

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

Posted: Sun Dec 10, 2006 7:40 am Post subject: Re: Oil pressure issues

Hi Guys,



This is an electronics or sender issue and not a filter issue. The bypass  on the filter works on differential pressure before it opens and not normal system pressure. The bypass only opens if there is a difference in pressure between the upstream and down stream side of a filter.

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Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
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