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hgmckay
Joined: 23 May 2006
Posts: 397
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 Posted: Wed Sep 29, 2021 3:48 pm Post subject: Oil Pressure Gauge reading |
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Two matters which I need advice on:- The oil Pressure gauge for my Rotax 912 UL engine in my Allegro 2000 has been acting strange recently. Just yesterday I made a 1 hour and 30 minute flight from N92 (Laneys Airport) to (KCEU) Oconee County Airport. The oil pressure gauge during flight normally indicates slightly over 4 bar pressure (in the normal green zone). Immediately after engine start the gauge needle will show about 5.5. bar, but after warm up and after takeoff the pressure will come back down to the 4 bar +/- pressure. However, on this flight after the oil pressure indication began to creep up to 6.0 bar (in the warning yellow zone). It stayed there for about 10 to 15 minutes, then gradually moved back to about 4 bar (in the green zone). This is continuing to happen on each cross-country flight. Any explanation as why this is happening?
- During operation on the ground and/or in the air my Rotax tach sometimes will momentarily and suddenly (without any noticeable change in engine sound or operation) drop in rpm from 5000 to 4000 +/-, fluctuate some and then return to 5000. Any explanation as to what may cause this, or what I should look for as a cause?
Hugh G. McKay III
Allegro 2000 ELSA
N661WW
877 Hours
Rotax 912 UL
hgmckay(at)bellsouth.net (hgmckay(at)bellsouth.net)
Phone 704-661-8271
Sent from Mail for Windows 10
| | - The Matronics RotaxEngines-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:
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williamtsullivan(at)att.n
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| Posted: Wed Sep 29, 2021 6:01 pm Post subject: Oil Pressure Gauge reading |
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My first thought is to clean and tighten all grounds.
Bill Sullivan
On Wednesday, September 29, 2021, 07:49:21 PM EDT, Hugh McKay III <hgmckay(at)bellsouth.net> wrote:
Two matters which I need advice on:- The oil Pressure gauge for my Rotax 912 UL engine in my Allegro 2000 has been acting strange recently. Just yesterday I made a 1 hour and 30 minute flight from N92 (Laneys Airport) to (KCEU) Oconee County Airport. The oil pressure gauge during flight normally indicates slightly over 4 bar pressure (in the normal green zone). Immediately after engine start the gauge needle will show about 5.5. bar, but after warm up and after takeoff the pressure will come back down to the 4 bar +/- pressure. However, on this flight after the oil pressure indication began to creep up to 6.0 bar (in the warning yellow zone). It stayed there for about 10 to 15 minutes, then gradually moved back to about 4 bar (in the green zone). This is continuing to happen on each cross-country flight. Any explanation as why this is happening?
- During operation on the ground and/or in the air my Rotax tach sometimes will momentarily and suddenly (without any noticeable change in engine sound or operation) drop in rpm from 5000 to 4000 +/-, fluctuate some and then return to 5000. Any explanation as to what may cause this, or what I should look for as a cause?
Hugh G. McKay III
Allegro 2000 ELSA
N661WW
877 Hours
Rotax 912 UL
hgmckay(at)bellsouth.net (hgmckay(at)bellsouth.net)
Phone 704-661-8271
Sent from Mail for Windows 10
| | - The Matronics RotaxEngines-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?RotaxEngines-List |
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